answer: #Person2# asks #Person1# for a waltz and compliments #Person1#.
documents: #Person1#: The music has started.
  #Person2#: How do you like this waltz?
  #Person1#: It's very nice.
  #Person2#: May I ask you for a dance?
  #Person1#: Certainly.
  #Person2#: You are doing the waltz wonderfully well.
  #Person1#: Thanks. I'm glad you say so. Oh, the music has stopped.