answer: Judy and Jack are discussing summer vacation. Jack will stay because Michael arranged a voluntary work at Michael uncle's institution, while Judy will fly to Hawaii.
documents: #Person1#: Hi, Jack. Who are you writing to?
  #Person2#: I'm writing to my parents, telling them I'll stay here this summer.
  #Person1#: You're not going home? I thought you were going on a trip to Japan with your family.
  #Person2#: Well, I intended, but I thought again in changed my mind.
  #Person1#: Tell me. I'm interested in knowing what keeps you from joining your beloved family and staying here?
  #Person2#: Michael arranged for me to work at his uncle's institution.
  #Person1#: How much will you be paid?
  #Person2#: Judy, I don't do it for money, but for experience. Besides, it's voluntary work.
  #Person1#: You work without payment? That's really something. What kind of work is it?
  #Person2#: I'll be a teacher in one of his uncle's orphanages. When will you leave for home?
  #Person1#: Tomorrow. We'll fly to Hawaii 2 days after.
  #Person2#: Have a nice vacation.
  #Person1#: I'll send you postcards.