A: May I help you?
B: Yes. Could you tell me how to use this movie player?
A: Of course. Let me turn it on for you. What kind of movie would you like to see?
B: Action movie.
A: All right. Here are all of the action movies. Please choose one.
B: Um, I'll choose that. And where is the headset?
A: Just beside the player.
B: Oh, I've found it. Wait. Why doesn't the headset work?There is no sound.
A: How about trying to turn it up?
B: It's useless.
A: Oh, I'm afraid that this headset is broken. Let me change it for you.
B: Would you please bring me a pillow?
A: Yes. Wait a moment.
B: Thank you very much.