How to integrated Whatsapp bot reply(Like Red bus..)

While I am not an authority on the subject, to the best of knowledge, it can only be done with Business WhatsApp which is different than our ususal domestic WhatsApp. It is a paid service and has too much of initial set-up which needs to be done.

 

For details visit:  https://developers.facebook.com/docs/whatsapp/

 

If you do not want to go through the pain of all of this, you can always use something already set-up and use it as a service.

 

For details visit:  https://www.twilio.com/whatsapp

 

Hope it helps!