answer: #Person2# and #Person2#'s brother are going to Tibet and #Person1# thinks it's cool, then #Person2# invites #Person1# to join them and tells #Person1# it won't cost too much since they're traveling on their own, so #Person1# agrees.
documents: #Person1#: wow! You're going to Tibet?
  #Person2#: yes, my brothe and I are going. We just finished making our itinerary.
  #Person1#: that's really cool! I've always dreamed of going somewhere like Tibet, seeing something unique.
  #Person2#: great minds think alike. My brother and I have been thinking about going to Tibet for quite a long time. Do you have anything on your schedule?
  #Person1#: nothing particular.
  #Person2#: why don't you join us? We are leaving next week ; you'll still have a week to prepare.
  #Person1#: oh, Tibet sounds great, but I'm afraid it'll cost too much. Last time I traveled to India, and it cost me a fortune.
  #Person2#: come on! We're traveling on our own. It won't cost too much.
  #Person1#: ok, then count me in. where will we stay?
  #Person2#: the youth hotels are comfortable and cheap.
  #Person1#: then make sure that you book me a room, too.
  #Person2#: I'll take care of it.
  #Person1#: and check whether they accept credit cards.
  #Person2#: no problem.