answer: Susan declines An's invitation to go swimming. Then they plan to play tennis together at two-thirty.
documents: #Person1#: Hello, Susan, it's me, An.
  #Person2#: Hi, An. How are you?
  #Person1#: I am fine. I am going swimming this afternoon. Are you coming with me?
  #Person2#: I am afraid I can't this afternoon. I take my daughter to her tennis class at the club on Wednesday afternoons.
  #Person1#: Maybe I can meet you at the club and we can play tennis together.
  #Person2#: Ok, I'll meet you at the club at two thirty.