Chat bots are bots that appear in chat. You can give them commands that they will follow. Usually, chat bots need a signal to know that the command is for them. An example is !. You have to put ! before a word. Like !tell. For tell, you have to put a username after it. It would look like this: !tell User1 Today's lesson is cancelled. The bot will say: I will tell User1 that the next time I see them. Then, the bot will tell User1: Example told you: Today's lesson is cancelled. User1 can tell back ok, unless they're already there. Or User1 can do nothing at all.