{"product_id":"automate-whatsapp-event-booking-with-n8n-openai-google-sheets","title":"Automate WhatsApp Event Booking with n8n, OpenAI \u0026 Google Sheets","description":"\u003ch3\u003eTurn WhatsApp event requests into instant bookings—automatically\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow automates \u003cstrong\u003eWhatsApp event booking\u003c\/strong\u003e end-to-end: it receives inbound messages via a \u003cstrong\u003eWAHA webhook\u003c\/strong\u003e, answers with \u003cstrong\u003eOpenAI\u003c\/strong\u003e using Postgres conversation memory and Google Sheets tools, and sends the response back through the \u003cstrong\u003eWAHA API\u003c\/strong\u003e as a text or an image caption.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReceives WhatsApp messages\u003c\/strong\u003e via a POST webhook from your WAHA server.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoads the assistant system prompt\u003c\/strong\u003e from an n8n \u003cstrong\u003eData Table\u003c\/strong\u003e and verifies the message is addressed to your business WhatsApp chat ID.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaintains conversation context\u003c\/strong\u003e by storing the customer’s message (or outgoing team messages) into a shared chat history.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnswers event and booking questions\u003c\/strong\u003e using OpenAI with \u003cstrong\u003ePostgres-backed memory\u003c\/strong\u003e plus tools that:\n    \u003cul\u003e\n      \u003cli\u003eRead your \u003cstrong\u003eGoogle Sheets event calendar\u003c\/strong\u003e\n\u003c\/li\u003e\n      \u003cli\u003eLook up \u003cstrong\u003eInstagram post details\u003c\/strong\u003e\n\u003c\/li\u003e\n      \u003cli\u003eAnalyze images via a \u003cstrong\u003esub-workflow\u003c\/strong\u003e\n\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAppend confirmed bookings\u003c\/strong\u003e to Google Sheets\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStructures the agent output\u003c\/strong\u003e into fields indicating whether to reply, the reply text, and an optional image URL.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSends the customer response\u003c\/strong\u003e through the WAHA API as either a \u003cstrong\u003etext message\u003c\/strong\u003e or an \u003cstrong\u003eimage with a caption\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCustomers ask for \u003cstrong\u003eevent availability\u003c\/strong\u003e on WhatsApp and get instant confirmation.\u003c\/li\u003e\n  \u003cli\u003eSupport teams respond faster by letting the workflow handle \u003cstrong\u003eFAQ-style booking questions\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eYou manage bookings in \u003cstrong\u003eGoogle Sheets\u003c\/strong\u003e while WhatsApp acts as the booking front door.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWAHA webhook\u003c\/strong\u003e (webhook endpoint) and WAHA API responses\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpenAI\u003c\/strong\u003e for the assistant + structured output auto-fix\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePostgres\u003c\/strong\u003e conversation memory (table: \u003ccode\u003ewhatsapp_chat_history\u003c\/code\u003e)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGoogle Sheets\u003c\/strong\u003e event calendar read\/write (requires \u003ccode\u003eYOUR_GOOGLE_SHEET_ID\u003c\/code\u003e)\u003c\/li\u003e\n  \u003cli\u003en8n nodes used include: \u003cstrong\u003ewebhook\u003c\/strong\u003e, \u003cstrong\u003eif\u003c\/strong\u003e, \u003cstrong\u003eset\u003c\/strong\u003e, \u003cstrong\u003edata table\u003c\/strong\u003e, \u003cstrong\u003esticky note\u003c\/strong\u003e, \u003cstrong\u003ehttp request\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e n8n users, automation engineers, and SaaS operators deploying WhatsApp-to-booking flows.\u003c\/p\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":45949994270899,"sku":"N8N-19178","price":53.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/kIPJtcxTh0eo_K73_UonZ_RkMdeAO4.png?v=1788512774","url":"https:\/\/buyflowscripts.com\/products\/automate-whatsapp-event-booking-with-n8n-openai-google-sheets","provider":"N8N Commerce","version":"1.0","type":"link"}