A: What a beautiful day!
B: Yes, it is.
A: I'm a little thirsty after sitting in the sun for such a long time.
B: Me too. Let me buy us a drink. What do you want?
A: Beer will be OK.
(He walks away, and comes back very soon)。
B: Oh my God! My wallet is gone.
A: What? Are you taking it along with you?
B: Definitely. Maybe it was stolen.
A: Let's think it through first. Find out what could happen to your wallet.
B: Exactly. I left our room with you in the morning. We have been together since we left our room, right?
A: Yes, after that we went shopping.
B: I bought my swim-suit there. And I paid it with the money in my wallet.What's after that?
A: We walked through the square then. There were a lot people out there. It could have been stolen there.
B: Probably. We are here after the square. There's no other possibilities.
A: Now it's very clear. Call the police then,and report this theft.
B: Yes,I'll dial 911. Can I borrow your cell phone?
A: Of course.