AI-powered reservation reminder calls for restaurant with Twilio & Grok-4

🤖📞 This workflow automates the process of calling customers to remind them of their booking reservations using AI-generated messages and a Twilio phone number. It can easily be adapted for other venues.

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Key Benefits

Time-Saving Automation: Eliminates the need for manual calls by staff, saving hours per week. Human-like AI Messages: Uses a custom language model to generate polite, natural phone messages tailored to each customer. Multi-Channel Integration:

Google Sheets for reservation tracking. Twilio for automated calling. OpenRouter (or other LLMs) for generating speech content. Error Reduction: Ensures all customers receive reminders exactly on the reservation day, minimizing no-shows. Scalable: Easily adapts to growing reservation lists and more complex message logic. Suitable for restaurants, hairdressers, offices and any other business

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How It Works 1. Trigger: - The workflow can be triggered manually (via "When clicking ‘Execute workflow’) or automatically at 11 AM daily (via Schedule Trigger). 2. Data Fetch: - Retrieves today’s reservations from a Google Sheet, filtering rows where DATE = today and CALLED is empty. 3. AI-Generated Call Script: - For each reservation, the Secretary Agent (powered by OpenRouter’s Grok-4) generates a phone script using the guest’s name, time, and party size. 4. Twilio Call: - The script is sent to Twilio, which calls the guest’s phone number (from the sheet) and reads the message aloud using text-to-speech. 5. Update & Loop: - Marks the reservation as called (CALLED = "x") in the sheet and waits 2 minutes between calls to avoid rate limits.

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