answer: Bob invites Amy for a dance at the party and praises her beautiful dance.
documents: #Person1#: Excuse me, miss. I'm Bob.
  #Person2#: I'm Amy. How do you do?
  #Person1#: I'm very glad to meet you. May I have this dance with you?
  #Person2#: Certainly! I suppose you dance often.
  #Person1#: No, I don't often dance. Isn't this a wonderful party?
  #Person2#: Yes, I'm glad I have come.
  #Person1#: How do you like fox-trot?
  #Person2#: I like it very much.
  #Person1#: You dance beautifully.
  #Person2#: Thank you. It's lucky that I have got a good partner.
  #Person1#: Thank you.