M: I want to order a laptop computer for my wife.

W: Certainly. What type would you like to buy for her?

M: AM520.

W: What color does she want, a black one or a white one?

M: She prefers a black one.

W: All right. Have you decided what size to buy? There are different sizes to choose from, from 13-inch ones to 17-inch ones.

M: Well, I want to buy a 15-inch one. How much does it cost?

W: 5000 yuan, including the postage.

What was said before this conversation?


W: Hello, this is Dell China. What can I do for you?