# Manage restaurant reservations via WhatsApp with Gemini: n8n workflow > Started by an incoming WhatsApp message, and works across Google Calendar, Google Sheets and WhatsApp. Source: https://millionrounds.com/workflow/gestiona-reservas-de-restaurante-por-whatsapp-con-gemini-y (Millionrounds; every figure on the page links to its filing or article) [Automation library](https://millionrounds.com/workflows) · [Scheduling](https://millionrounds.com/workflows?category=Scheduling#library) # Manage restaurant reservations via WhatsApp with Gemini Started by an incoming WhatsApp message, and works across Google Calendar, Google Sheets and WhatsApp. It puts Gemini behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 21 steps, 1 branch: large, and worth reading before you trust it with anything live. Large Calls a model: Gemini Retrieval [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fgestiona-reservas-de-restaurante-por-whatsapp-con-gemini-y) **21 steps** Large: read it before trusting it with anything live **1** Branch: places the flow splits **0** Loops or waits **3** Services it connects to ## The flow Starts it 1 Model 4 Logic 3 Service 13 The steps in the order they run, from what starts it. - 1 **Mensaje de WhatsApp** Whats App trigger *Starts it* - 2 **Modelo Gemini** Lm Chat Google Gemini *Model* - 3 **Memoria por cliente** Memory Buffer Window *Model* - 4 **Consultar menu** Google Sheets Tool *Service* - 5 **Guardar reserva** Google Sheets Tool *Service* - 6 **Agendar en calendario** Google Calendar Tool *Service* - 7 **Notificar al restaurante** Whats App Tool *Service* - 8 **Buscar reservas** Google Sheets Tool *Service* - 9 **Cancelar reserva** Google Sheets Tool *Service* - 10 **Borrar del calendario** Google Calendar Tool *Service* - 11 **Modificar reserva** Google Sheets Tool *Service* - 12 **Actualizar calendario** Google Calendar Tool *Service* - 13 **Texto o audio** Switch *Logic* - 14 **Agente de Reservas** Agent *Model* - 15 **Preparar texto** Set *Logic* - 16 **Obtener URL del audio** Whats App *Service* - 17 **Avisar formato no soportado** Whats App *Service* - 18 **Responder al cliente** Whats App *Service* - 19 **Descargar audio** Http Request *Service* - 20 **Transcribir audio con Gemini** Google Gemini *Model* - 21 **Preparar transcripcion** Set *Logic* ## How it's built - **Starts on:** An incoming WhatsApp message - **Steps:** 21, with 1 branch - **Size:** Large: read it before trusting it with anything live - **Connects to:** Google Calendar, Google Sheets, WhatsApp - **Model:** Gemini - **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 Calendar, Google Sheets and WhatsApp accounts, and a key for Gemini. 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 Gemini. 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? Take your time. At 21 steps it is large: read it before trusting it with anything live. 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 21 steps before you point it at anything that matters. ## Run it in n8n - **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n) - **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fgestiona-reservas-de-restaurante-por-whatsapp-con-gemini-y) - **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts. Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind. ## Connects to Each opens the other workflows that use it. [Google Calendar](https://millionrounds.com/workflows?service=Google+Calendar#library)[Google Sheets](https://millionrounds.com/workflows?service=Google+Sheets#library)[WhatsApp](https://millionrounds.com/workflows?service=WhatsApp#library) ## Workflows like it Also scheduling, with the same services where possible, closest in size first. - [**AI Virtual Assisstant Version 1 with Gemini and Gmail** 21 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/ai-virtual-assisstant-version-1-with-gemini-and-gmail) - [**AI multi-agent executive team for entrepreneurs with Gemini** 21 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/ai-multi-agent-executive-team-for-entrepreneurs-with-gemini) - [**Automate peer review assignments with Sonar Pro AI** 21 steps · calls a model · Discord, Email](https://millionrounds.com/workflow/automate-peer-review-assignments-with-sonar-pro-ai) - [**Book and remind appointments with Telegram and Gemini** 21 steps · calls a model · Google Calendar, Google Sheets](https://millionrounds.com/workflow/book-and-remind-appointments-with-telegram-and-gemini) - [**Generate and schedule LinkedIn posts with Google Sheets** 21 steps · calls a model · Google Sheets, LinkedIn](https://millionrounds.com/workflow/generate-and-schedule-linkedin-posts-with-google-sheets) - [**Personal Google Calendar & reminder bot on Telegram** 21 steps · calls a model · Google Calendar, Telegram](https://millionrounds.com/workflow/personal-google-calendar-and-reminder-bot-on-telegram)