Classify guest enquiries and send replies with GPT-4o, Gmail and Slack

by Rahul Joshi ✓ · 87 views · created 2026-01-23 · Ticket Management, AI Summarization

What this workflow does

This AI workflow has 16 nodes and runs when an HTTP POST request hits its webhook URL (plus 1 other trigger). Along the way it connects Gmail, OpenAI Chat Model and Slack.

How it runs

Trigger: When an HTTP POST request hits its webhook URL (plus 1 other trigger).

1. AI Agent: runs an AI agent, with model: OpenAI Chat Model; output parser: Structured Output Parser
2. Slack: uses Slack
3. Extract Detected Category (Edit Fields (Set)): sets or maps fields
4. Route by Intent Category (Switch): routes items into 4 branches
5. Assign to Booking Team (Edit Fields (Set)): sets or maps fields
6. Assign to Pricing Team (Edit Fields (Set)): sets or maps fields
7. Assign to Availability Team (Edit Fields (Set)): sets or maps fields
8. Assign to Policy Team (Edit Fields (Set)): sets or maps fields
9. Check Guest Contact Preference (If): checks a condition and branches into true / false
10. Send Email Reply to Guest (Gmail): uses Gmail

…plus 2 more steps. See the full node list below.

Services it uses

GmailOpenAI Chat ModelSlack

Before you upgrade to n8n 3.0

Nodes used (10)

• Edit Fields (Set)n8n-nodes-base.set
• Switchn8n-nodes-base.switch
• Gmailn8n-nodes-base.gmail
• AI Agent@n8n/n8n-nodes-langchain.agent
• OpenAI Chat Model@n8n/n8n-nodes-langchain.lmChatOpenAi
• Ifn8n-nodes-base.if
• Slackn8n-nodes-base.slack
• Webhookn8n-nodes-base.webhook
• Structured Output Parser@n8n/n8n-nodes-langchain.outputParserStructured
• Error Triggern8n-nodes-base.errorTrigger

From the author

📘 Description This workflow automates guest enquiry intake, intent classification, response generation, and internal routing for hospitality businesses using webhooks, GPT-4o, Gmail, and Slack. It converts raw guest enquiries into structured, actionable…

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