Can customers book a table on WhatsApp?

Yes. On the free Business app, the customer messages you and you confirm the booking by chat. On the API, a WhatsApp Flow can show a booking form inside the chat.

• By chat: ask for date, time and number of guests, then confirm in writing. A saved quick reply keeps the questions the same each time.
• Flows: forms inside the chat. Meta lists booking appointments as one use. They work only on the WhatsApp Business Platform (the API).
• To send Flows you need a verified business and high message quality.
• Reminders: once 24 hours have passed since the customer's last message, the API only lets you send an approved template, charged per message.
• Google: add your phone number to your Google Business Profile and a WhatsApp chat button shows in Search and Maps.