What is the easiest way to create a support chatbot for my React Native app?

Hi IH's I am about to launch a new app soon. It's a platform where you can create and manage your communities with ease. Something like meetup.

I know that initially I will struggle with the support. And hence I want to create a help chatbot inside the React Native app.

I have heard that Google is about to launch its new product called meena. And it will be going to be the best in the world. But before that do, I have any other affordable option?