answer: Frank invites Melissa to his wife's birthday party. Melissa accepts.
documents: #Person1#: Melissa? I'd like to invite you to my wife's birthday party.
  #Person2#: Thanks, Frank. I'd love to come. When is it?
  #Person1#: Her birthday is on the 9th. We're going to have dinner at a Mexican restaurant, and then maybe go out dancing.
  #Person2#: Sounds like fun. You can count me in! Just give me directions to the restaurant.