How to train a rasa AI using reddit subreddits and 4chan boards?

My friends and I thought it would be fun to train an AI to talk like a reddit user. I am relatively new to this but have expierience programming in python, furthermore with discord bots (the medium in which the AI will talk). Is it possible to get a large dataset based on the posts and comments of a reddit subreddit, and possibly a 4chan board? It’s for curiosity purposes, I’m just wondering if and how it would be done. Thanks in advance.

I did not get your question properly, do you want the RASA chatbot to talk to other reddit user on reddit’s dm? and also want the chatbot to learn how a reddit user texts and reply in same manner to them?