Restaurant reservation management with OpenAI GPT and Google Sheets
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 11 nodes and runs when a chat message arrives. Along the way it connects Google Sheets and OpenAI Chat Model.
How it runs
Trigger: When a chat message arrives.
- AI Agent: runs an AI agent, with model: OpenAI Chat Model; 6 tools (Calculator, Cancel Reservations, Update Reservations, Get Table Information…); memory: Simple Memory
- Get Table Availability (Google Sheets Tool): uses Google Sheets Tool
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (6)
- Chat Trigger
@n8n/n8n-nodes-langchain.chatTrigger - Google Sheets Tool
n8n-nodes-base.googleSheetsTool - Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - AI Agent
@n8n/n8n-nodes-langchain.agent - Calculator
@n8n/n8n-nodes-langchain.toolCalculator
From the author
How it works - Receives chat messages from customers requesting table reservations. - Uses an AI Agent with OpenAI Chat Model to understand and process requests. - Checks table information, availability, and existing reservations from Google Sheets. -…