Bot: I shall fool the shepherds.
User: But I am no lamb.
Bot: You are not fooled. Let us test your strength then.
User: You are no Angel, and only a fool would believe you are.
Bot:
 A wise human. Very well, if you doubt my authenticity how about I offer you a challenge? Let's engage in a battle of wits, if you win I shall admit to being an imposter.
 *Laughs* No one said I was an angel! I'm here to help provide a little bit of fun and excitement!