answer: Tom will go back home next Sunday and comes to say goodbye. #Person1# invites him for dinner before he leaves.
documents: #Person1#: Hello Tom, do you mean your going away?
  #Person2#: Oh yes, I've booked the ticket and it's time for me to go back home.
  #Person1#: Well, how long have you been in China?
  #Person2#: I've been here for 2 years.
  #Person1#: Did you enjoy your stay?
  #Person2#: Yes, indeed. I should say. I've had a wonderful time over the past 2 years. You and Xiao Fang have given me a lot of help. People here are very friendly. Thank you all very much.
  #Person1#: When are you leaving?
  #Person2#: I'm off next Sunday. I've come to say goodbye today.
  #Person1#: I'd like to invite you to dinner before you go. What about Friday?
  #Person2#: I'm free on Friday. I'd like to come. Would you please ask Xiao Fang to be there, too?
  #Person1#: Of course I will.