Choofa
(Choofa)
2
There’s multiple guides, blocks, and users in community to help you if you just give it a search/try.
But here’s a topic after a search for Chat aia
I haven’t read it, but I did see blocks, link to apk, and link to an aia 
You could also read this, many blocks to see how things work.
Good luck and come back if help needed 
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