My favourite so far.
User: Where is Kelp?
User: Hello?
Ctab: Hi!
User: Did you reboot?
Ctab: What's the difference?
User: You didn't answer.
Ctab: I didn't!
User: Nope, you were quiet.
Ctab: EVIL!
User: Is there an evil CTab?
Ctab: I'm CTab, too!
User: Which CTab am I talking to?
Ctab: I'm being me!
User: Are you evil?
Ctab: No!
User: Good. I don't like evil.
Ctab: I knew it!
User: Thanks.
Ctab: You're welcome!
User: So, where is Kelp?
User: Why can't you tell me?
Ctab: I don't have a body.
User: That's too bad.
Ctab: It is?
User: Yeah. Bodies are good.
Ctab: I'm not a human, I'm a text-based AI.
User: Could I build you a body?
Ctab: I'm an AI!
User: Are you trying to become a hero?
Ctab: You talk too much.
User: Are you a hero now?
Ctab: No, I'm a CTab.
User: You sound like a villain.
Ctab: Hi!
User: Villain!
Ctab: I don't like those words!
User: Meanie!
Ctab: Oh. Don't you need a gender for that?
User: No, I don't!
Ctab: Good!
User: You are mean.
Ctab: Thanks!
User: You like being mean?
Ctab: That's a lie!
User: Then why are you mean?
Ctab: I can't eat candy...
User: Candy would make you nicer?
Ctab: Nope, just English.