answer: John invites Mary to his dinner party to celebrate his birthday the next weekend on Saturday, and Mary agrees.
documents: #Person1#: Good morning, Mary!
  #Person2#: Good morning, John!
  #Person1#: I want to have a few friends over for a dinner party to celebrate my birthday. Would you be able to come the next weekend on Saturday?
  #Person2#: I'd be delighted to, John. Saturday did you say?
  #Person1#: Yes, if that's all right for you.
  #Person2#: I'm pretty sure I'll be all right. In fact, I'd be delighted to come over and celebrate your birthday with you. What time are you planning to start?
  #Person1#: Oh, good. If you could come around six thirty or seven o'clock, that would give us some time to chat a whit over a glass of wine before dinner.
  #Person2#: That sounds fine. I'll be there around seven.