This article provides a complete, practical walkthrough of the Code Respondtowebhook Create Webhook n8n agent. It connects HTTP Request, Webhook across approximately 1 node(s). Expect a Intermediate setup in 15-45 minutes. One‑time purchase: €29.

What This Agent Does

This agent orchestrates a reliable automation between HTTP Request, Webhook, handling triggers, data enrichment, and delivery with guardrails for errors and rate limits.

It streamlines multi‑step processes that would otherwise require manual exports, spreadsheet cleanup, and repeated API requests. By centralizing logic in n8n, it reduces context switching, lowers error rates, and ensures consistent results across teams.

Typical outcomes include faster lead handoffs, automated notifications, accurate data synchronization, and better visibility via execution logs and optional Slack/Email alerts.

How It Works

The workflow uses standard n8n building blocks like Webhook or Schedule triggers, HTTP Request for API calls, and control nodes (IF, Merge, Set) to validate inputs, branch on conditions, and format outputs. Retries and timeouts improve resilience, while credentials keep secrets safe.

Third‑Party Integrations

• HTTP Request
• Webhook

Import and Use in n8n

1. Open n8n and create a new workflow or collection.
2. Choose Import from File or Paste JSON.
3. Paste the JSON below, then click Import.
4. Show n8n JSON

   Title:
   Build an Intelligent, Branded Appointment Booking Chatbot with n8n and OpenAI
   
   Meta Description:
   Discover how to create a fully automated, AI-powered chatbot using n8n, OpenAI GPT-4o, Microsoft Outlook, and LangChain. Enable seamless appointment scheduling, intelligent client interactions, and human handover—all embedded into your website with custom branding.
   
   Keywords:
   n8n chatbot, no-code AI assistant, appointment booking automation, Microsoft Graph API, OpenAI GPT-4o, website chatbot, Outlook calendar integration, LangChain, AI meeting scheduler, GPT-4 chatbot, business automation
   
   Third-Party APIs Used:
   
   1. OpenAI API (GPT-4o language model)
   2. Microsoft Graph API (Calendar + Events endpoint for Outlook)
   3. LangChain via @n8n/n8n-nodes-langchain module
   4. Microsoft Outlook (Email + Calendar with OAuth2)
   5. Ko-fi API (suggested via optional donation link)
   6. n8n.io (workflow automation platform used to build the bot)
   
   —
   
   Article:
   
   How to Build an AI-Powered Appointment Booking Chatbot with n8n, OpenAI, and Microsoft Outlook
   
   In the evolving landscape of customer experience and automation, having an intelligent, branded chatbot that not only responds to customers but actively schedules appointments—and escalates complex queries to humans—can set your business apart.
   
   In this article, we’ll walk through a powerful n8n workflow developed by Wayne Simpson at nocodecreative.io. It combines OpenAI’s GPT-4o model, Microsoft Outlook Calendar, and a branded chatbot interface to serve as an executive assistant chatbot—capable of handling real-time appointment scheduling with context-aware interactions.
   
   Let’s break down what makes this AI chatbot unique and how it works under the hood.
   
   🧠 Core Capabilities: What This Chatbot Can Do
   
   The workflow powers a sophisticated chatbot capable of the following:
   
   - Hold natural conversations powered by GPT-4o via LangChain
   - Gather customer availability, timezone, meeting preferences, name, company, and contact email
   - Automatically check real-time calendar availability using Microsoft Graph API
   - Suggest and book 30-minute video consultations using Outlook
   - Escalate complex queries or human contact requests via email
   - Maintain conversation continuity with memory contexts
   - Initiate from a public webhook (perfect for embedding on websites)
   - Provide clear communications confirming appointments or helping customers reschedule
   
   🏗️ Architecture: How It’s Built
   
   This chatbot is powered entirely by n8n, a powerful open-source workflow automation platform. Here’s how it flows:
   
   1. Webhook-Based Chat Trigger:
   Using the n8n Chat Trigger node, customer queries from the embedded widget are captured. If no chat input is provided, an initial message asks, “Hi, how can I help you today?”
   
   2. Natural Language Understanding via GPT-4:
   The OpenAI Chat Model (GPT-4o) interprets user inputs, follows a detailed system prompt that defines behavior, and powers responses via LangChain’s AI Agent node. This instructs the AI to collect user details, check real-time availability, and avoid double bookings.
   
   3. Dynamic Memory:
   A memory buffer retains up to 20 message iterations, helping the AI remember user preferences or incomplete responses mid-session.
   
   4. Intelligent Appointment Scheduling:
   a. The “Get Events” node contacts Microsoft Graph API to pull all Outlook events for the next 14 working days.
   b. These events are sorted, and available time slots are identified within business hours (8:00 AM–5:30 PM UK time) using the custom JavaScript in the “freeTimeSlots” Code node.
   c. The first suitable 30-minute time block is selected and sent via HTTP POST to the Graph API to book via the “Make Appointment” node.
   
   5. Error Handling and Human Touch:
   If a customer is unsure or their query falls outside appointment booking, the “Send Message” tool activates. This takes project details and sends an HTML-formatted, professional email to the founder's inbox to follow up manually.
   
   6. Smart Routing:
   A Switch node determines whether the route is to check “availability” or send a “message”, guiding users along the right workflow path depending on intent.
   
   7. Final Responses:
   Webhook responses provide chat output back to the frontend, closing the automation loop from user input to business action—all in under a few seconds.
   
   🎨 Branded Chat Widget and Email Styling
   
   In addition to functionality, this workflow emphasizes polish. HTML email templates used in handover messages are fully branded — including color gradients, headers, and formatted fields (name, company, message, etc.).
   
   The chatbot’s persona also aligns with the company’s tone—friendly, professional, and human-aware, signing off meeting confirmations with phrases like, “You’ll be meeting our founder, Wayne, for a free 30-minute consultation.”
   
   ✨ Key Features to Customize for Your Brand
   
   - Your founder’s name, company, email, and time zone
   - HTML email templates for handovers
   - Business hours (currently set to 8 AM–5:30 PM, Europe/London)
   - Maximum 30-minute meeting duration
   - Free consultation notice
   - API credentials for Microsoft Graph and OpenAI
   
   ✅ Real-World Use Cases
   
   This chatbot setup is ideal for:
   
   - Consultants and freelancers booking discovery calls
   - Small teams managing high inbound traffic
   - Companies that want to be reachable 24/7 without hiring round-the-clock staff
   - Agencies capturing highly qualified leads automatically
   
   🧩 Expandability & Integration Potential
   
   Because this is built in n8n, it is entirely modular. Future enhancements could include:
   
   - CRM integrations (e.g., HubSpot, Salesforce)
   - SMS or WhatsApp follow-ups
   - Automatic calendar reminders
   - Voice-to-text capabilities
   - Google Calendar support
   
   🔚 Final Thoughts
   
   This chatbot sets a new bar for automated professionalism. By blending a chat interface with AI reasoning, live calendar availability, and seamless fallback to human interactions, it delivers real customer value—on autopilot.
   
   And best of all? It's built without writing traditional backend code.
   
   To try it for yourself or stake your own branded chatbot, visit Wayne's tutorial at nocodecreative.io or deploy the full template in your n8n workspace.
   
   —
   
   Looking for inspiration or need help customizing your own AI assistant? Reach out to nocodecreative.io—or check out the full video tutorial and walkthrough in the embedded links in the original workflow.
   
   ☕ Built by Wayne Simpson at nocodecreative.io. If you’ve found this useful, consider buying him a coffee here.

5. Set credentials for each API node (keys, OAuth) in Credentials.
6. Run a test via Execute Workflow. Inspect Run Data, then adjust parameters.
7. Enable the workflow to run on schedule, webhook, or triggers as configured.

Tips: keep secrets in credentials, add retries and timeouts on HTTP nodes, implement error notifications, and paginate large API fetches.

Validation: use IF/Code nodes to sanitize inputs and guard against empty payloads.

Why Automate This with AI Agents

AI‑assisted automations offload repetitive, error‑prone tasks to a predictable workflow. Instead of manual copy‑paste and ad‑hoc scripts, your team gets a governed pipeline with versioned state, auditability, and observable runs.

n8n’s node graph makes data flow transparent while AI‑powered enrichment (classification, extraction, summarization) boosts throughput and consistency. Teams reclaim time, reduce operational costs, and standardize best practices without sacrificing flexibility.

Compared to one‑off integrations, an AI agent is easier to extend: swap APIs, add filters, or bolt on notifications without rewriting everything. You get reliability, control, and a faster path from idea to production.

Best Practices

• Credentials: restrict scopes and rotate tokens regularly.
• Resilience: configure retries, timeouts, and backoff for API nodes.
• Data Quality: validate inputs; normalize fields early to reduce downstream branching.
• Performance: batch records and paginate for large datasets.
• Observability: add failure alerts (Email/Slack) and persistent logs for auditing.
• Security: avoid sensitive data in logs; use environment variables and n8n credentials.

FAQs

Can I swap integrations later? Yes. Replace or add nodes and re‑map fields without rebuilding the whole flow.

How do I monitor failures? Use Execution logs and add notifications on the Error Trigger path.

Does it scale? Use queues, batching, and sub‑workflows to split responsibilities and control load.

Is my data safe? Keep secrets in Credentials, restrict token scopes, and review access logs.