Assistant: Can I help you?
Andy: Yes, please. Those red shoes are nice. Can I try them on?
Assistant: Sure. What size?
Andy: Size six.
Assistant: Here you are.
Andy: Thank you.
Assistant: Are they all right?
Andy: Yes, I like them. How much are they?
Assistant: They are 230 yuan.
Andy: They are too expensive.
Assistant: How about these ones? They are cheap and cool. Andy: Wow! Cool. I'd like a pair of blue ones. How much?
Assistant: They are eighty yuan.
Andy: OK, I'll take them. Thank you.