完成对话，根据下下文在横线上填上合适的句子。

A: Can I help you?

B: __1__ . I'm looking for a shirt for myself.

A: What size do you wear.

B: Size 40.

A: __2__ ?

B: Blue.

A: I think these will be very nice.

B: Can I try it on here?

A: __3__  .

B: (Coming out of the change room) I think it's OK. But I'm afraid it's a bit expensive. Can I get it at a

    discount?

A: Yes.  it's 10% off today.

B: OK. __4__ . By the way do I have to pay cash (现金)?

A: Yes. Only cash.(Handing over the shirt) Here you are.

B: Thank you.

A: __5__.