Dialogue ThreeClerk: ___1___
Lady: I'm sorry, but this is the first time I've ever come here, so I don't really know my way around your store.
Clerk: What are you looking for? Maybe I can point you in the right direction.
Lady: I'd like to buy some ladies' wear.
Clerk: That would be on the second floor.
Lady: Oh, thank you. By the way, do you have after-sales service here?
Clerk: Of course, if you find there is something wrong with your purchase, just bring it back within 30
days for an exchange or a full refund. ___2___
Lady: No, thank you. ___3___
Clerk: I hope you enjoy yourself.
A. Is there anything else I can help you with?
B. You've already been most helpful.
C. Can you give me the invoice(发票)?
D. What can I do for you?