Click to zoomOverview
A WhatsApp AI agent for hotel guest services. Handles room inquiries, booking lookups, and receipt verification using GPT-4o Vision. Integrated with Google Sheets for live room data and supports multiple languages.
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What needed solving
Hotel front desk staff spend hours answering repetitive guest messages on WhatsApp: room availability, booking confirmations, receipt questions. This leaves little time for high-value guest interactions. Most small and mid-size hotels cannot afford 24/7 staffing.
How I approached it
Aria is a multilingual WhatsApp AI agent that handles the full guest communication cycle autonomously. It plugs into the hotel's existing WhatsApp number via GreenAPI, pulls live room data from Google Sheets, and uses GPT-4o Vision to verify receipts with no human needed for routine queries.
Step by step
- 01
Guest sends a WhatsApp message to the hotel number
- 02
GreenAPI triggers the n8n workflow instantly
- 03
Message is parsed and routed: text queries go to the AI agent, image messages go to Vision AI
- 04
For text: Aria queries Google Sheets for live room availability and booking data, then responds in the guest's language
- 05
For images: GPT-4o Vision analyzes the receipt and sends a verification response
- 06
All replies are sent back to the guest via WhatsApp automatically
Outcomes
- ✓
Zero human involvement for routine guest queries
- ✓
Multilingual support out of the box with no extra configuration
- ✓
Receipt verification handled in seconds instead of manual checking
- ✓
Available 24/7 with instant response times
Key features
Dual-path routing: text vs image handled by separate AI pipelines
Persistent memory so Aria remembers context within a conversation
Google Sheets as a no-code database so hotel staff update room data without touching the system
Built as a proof of concept, confirmed working end to end