WhatsApp Integration with ChatBot/Knowledge Base

@ehtasham.malik Customer is looking for WhatsApp Business messenger that should have an access to public. Based on the key word fed by them, the application to respond with the relevant statistical information for the visitors.
The customer will publicize the WhatsApp number in medias/website etc. So, their public can reach them in WhatsApp. The system will have the predefined information that need to be pulled based on the keyword.