Creating a chatbot connected to Whatsapp Business

Hey guys ,

I would like to have an automated chatBot for my small business that will answer to the leads that contact me on Whatsapp Business .

I want the bot to be connected to OpenAi, and feed him with all my previous Whatsapp conversations.

I have some experience in Coding ( mostly front end )

Can you guys tell me the most easy and cost-efficient way to start this bot ?

All the best