顾客customer售货员salesmanS：can I help you？C：yes，I'd like to choose CDS：about music？C：yes，which is popular now？S：this one，have a try to listenC：OK，that's perfect，how much is it？S：35 yuanC：can you make it cheaper？S：em?OK，how about 32？C：a little expensive，25，OK？S：I'm afraid not，30，my final offerC：OK，I will take it，h...
A:Can I help you? B:Yes, please. I want a CD. A:How about this one? B:Can I listen to it first? A:Sure. B:It sounds good.How much is it? A: Fifteen yuan. ...
