answer: Su tells #Person1# she turns seven and will have a birthday party.
documents: #Person1#: How old are you, Su?
  #Person2#: I am seven.
  #Person1#: I see, you have seven candles on the cake.
  #Person2#: Yes, I am seven. I am a big girl now.
  #Person1#: We will have a party here, right?
  #Person2#: Yes, come on, and we will have fun.