Pizza Ordering System (AI Agent)

Main use cases:

1. Allow customers to browse the pizza menu via chat.
2. Enable fully automated pizza ordering through an AI agent.
3. Store and manage orders in Google Sheets in real time.
4. Let customers check order status without human support.
5. Handle order cancellations with validation rules.

How it Works:

This workflow uses an AI-powered chatbot built with n8n and OpenAI to manage the complete pizza ordering lifecycle-from menu discovery to order confirmation and cancellation.

1. Chat Trigger

• The workflow starts when a customer sends a message in the chat.
• The AI agent greets the user and understands their intent (menu, order, status, or cancellation).

2. Menu & Pizza Validation

• If the user asks for the menu, the system fetches all pizzas from Google Sheets.
• If a specific pizza is requested, the AI validates its availability before continuing.
• Invalid pizza names are politely rejected with a suggestion to view the menu.

3. Order Creation

• The AI collects all required details:
  • Pizza type
  • Size (Small / Medium / Large)
  • Toppings (optional)
  • Quantity
  • Customer name
  • Address
  • Phone number
• A calculator tool computes the total price accurately.
• The order is stored in Google Sheets with a unique Order ID and default status “Order Received”.
• The Order ID is shared only once, during order confirmation.

4. Order Confirmation

• The customer receives a friendly confirmation message with:
  • Pizza details
  • Estimated delivery time (25–30 minutes)
  • Order ID (shown only here)

5. Order Status Check

• Customers can request their order status by providing the Order ID.
• The system retrieves the latest status from Google Sheets.
• The response shows the pizza and its current status - without revealing the Order ID again.

6. Order Cancellation

• Customers can cancel orders using their Order ID.
• The system verifies the order and prevents cancellation if it’s already out for delivery or delivered.
• On successful cancellation, the order status is updated in Google Sheets.

Why This Workflow is Powerful 🚀

• Fully automated end-to-end ordering system
• No manual order handling required
• Real-time order tracking with Google Sheets
• Clear business rules enforced by AI
• Scalable for restaurants, cloud kitchens, and food startups

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