Which chatbot service should I use? How to build simple chatbot with my own logic?

I want to create a chatbot, my interface should be - I ask users 3 questions, and i provide options for each question.user can't type, he can only chose the option. There are around 20 options for each question,so there should be a search button to search the right option. Then i should know what options the user choose so that I can return output based on my logic.