answer: Mary meets John at a bus stop. John tells Mary he wants to see some of the country this summer but traveling is expensive. Mary suggests camping at some campgrounds and John gets interested.
documents: #Person1#: Hi, John, I haven't seen you for a few weeks.
  #Person2#: Oh, hi, Mary. l've been studying a lot for my final exam.
  #Person1#: Well, the term is almost over now.
  #Person2#: Yeah. My brother is coming for a visit this summer, and we'd like to see some of the country. But traveling is so expensive.
  #Person1#: Have you thought about camping? I think you'll really like it. You can rent the equipment you need. It's much cheaper than buying it or staying at a hotel.
  #Person2#: What a good idea! We can drive until we find a nice spot and just camp wherever we like.
  #Person1#: Well, not exactly. It's usually not allowed unless you camp in a pointed area. But there are many national parks and state parks owning camp grounds around the country.
  #Person2#: But that takes all the fun out of it.
  #Person1#: Not really. Besides, you'll find it easier and convenient to live at the camp grounds for you to take a shower or buy some food there. It's a good way to make new friends, too.
  #Person2#: Sounds great! Here's my bus. I'll talk to you about this again and get all the details.