A: What are you going to do in the summer?
B: I am planning a trip to the United States.
A: That's cool. So how long will you stay in the U.S.?
B: 2 weeks by myself. Hey, would you recommend some places of interest for me?
A: Sure. Do you prefer natural scenery or cultural heritage?
B: I guess natural scenery, like Yellowstone National Park.
A: Hmm, let me think. You can go to the states in the southwest, like Arizona. And you can visit desert and canyons there.
B: Sounds like an adventure. I am really excited about that.
A: You'd better join a tour group. And there are some groups at the hotels.You can reserve when you check in.
B: Great.
A: And you'd better start some physical exercise now.
B: That's so nice of you.