answer: Benjamin meets John on the plane. Benjamin tells John he feels sick because of the lower pressure and the jet lag and John asks him to take it easy. Then they start to talk about the landmarks in China, Chinese tea, and Chinese traditional silk.
documents: #Person1#: Hi, I'm Benjamin. Nice to meet you here. You look great.
  #Person2#: Thank you. Nice to meet you too. I'm John. Is this your first time to take a long-distance trip on plane?
  #Person1#: No, this is the second time. But I also feel bad because of the lower pressure and the jet lag.
  #Person2#: Oh, I am sorry to hear that. Take it easy. It will be OK soon. You see, I take this long-hour plane frequently, but the jet lag still makes me uneasy.
  #Person1#: Oh, that's too bad. Do you get a good knowledge of China?
  #Person2#: Yes, whenever I think about China, I'd see the Tian'an Men Square. China is a very beautiful country. And I've seen many landmarks in China but I like the Great Wall most.
  #Person1#: All of the Chinese are proud of the Great Wall. And it was built before the In dynasty near Shan Haiguan-the First Pass in the World.
  #Person2#: Was it built before the In dynasty? I thought it was in the Ming dynasty.
  #Person1#: No, before the In dynasty.
  #Person2#: Oh, yeah. Thought I am an American, I know quite a lot about China and I like Chinese tea very well.
  #Person1#: Both the green tea and the black tea are good for our health. And I usually refresh myself with a cup of tea.
  #Person2#: Yeah, many of my friends like Chinese tea and whenever I go back to China, I'll take some Dragon-well green tea for them.
  #Person1#: Do you like the Chinese traditional silk?
  #Person2#: I heard about it, but I don't have any clothes made from silk.
  #Person1#: Go and pick some stuff up. The price can always surprise foreign friends.
  #Person2#: Oh, I'm eager to have a try.