A: I would like to exchange this dress.
我想换件裙子。

B: You can exchange this dress with anything of the same value.
你能换件和这件裙子同等价钱的。

A: Is there anything on sale today?
今天有什么特价的吗？

B: I'm sorry. There are no sales today.
抱歉，今天没有打折的。

A: Are dresses going to be on sale?
有将要打折的裙子吗？

B: Everything's going to be on sale next weekend.
所有的商品下周都将要打折。

A: That's great. I'll wait. See you next weekend.
那很好。我会等等看的。下周见了。

B: Okay. I'll see you then.
好的。到时候见。