Automation library · Scheduling

Automate restaurant reservations with Google Sheets

Started by an incoming WhatsApp message, and works across Google Sheets and WhatsApp. It puts OpenAI behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 16 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAIRetrieval

16 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 2Model 4Logic 3Service 7

The steps in the order they run, from what starts it.

  1. 1WhatsApp TriggerWhats App triggerStarts it
  2. 2OpenAI Chat ModelLm Chat Open AiModel
  3. 3log reservationGoogle Sheets ToolService
  4. 4CalculatorTool CalculatorModel
  5. 5Simple MemoryMemory Buffer WindowModel
  6. 6Schedule TriggerSchedule triggerStarts it
  7. 7FilterFilterLogic
  8. 8AI AgentAgentModel
  9. 9Get row(s) in sheetGoogle SheetsService
  10. 10Send messageWhats AppService
  11. 11IfIfLogic
  12. 12Send message2Whats AppService
  13. 13Filter1FilterLogic
  14. 14Update row in sheetGoogle SheetsService
  15. 15Send message1Whats AppService
  16. 16Update row in sheet1Google SheetsService

How it's built

Starts on
An incoming WhatsApp message
Steps
16, with 1 branch
Size
Medium: a working afternoon
Connects to
Google Sheets, WhatsApp
Model
OpenAI
Retrieval
Answers are drawn from documents you supply, not from the model alone

Questions

What does it need to run?

An n8n account, plus your own Google Sheets and WhatsApp accounts, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an incoming WhatsApp message.

Does it use AI?

Yes. It calls OpenAI. Its answers draw on documents you give it, not on the model alone. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 16 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

Before you run it

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 16 steps before you point it at anything that matters.