A:Excuse me. Can you help me please?
打扰一下。可不可以请您帮我个忙？

B:Yes. What can I do for you?
是的。我能帮你什么呢？

A:I'd like to return this product.
我想退货。

B:What appears to be wrong with it?
出什么问题了？

A:There's nothing wrong with it. However, I don't like the color.
没出什么问题。不过，我不喜欢这颜色。

B:Can I see your receipt, please?
我能看看你的收据吗？

A:I'm sorry, I lost it. I bought it last Friday. Can you look up the details of the sale?
对不起，我弄丢了。我是上周五买的，你能不能帮我查查销售记录？

B:I don't have those details, I'm sorry.
我们没有那些记录。很抱歉！

A:So what can I do?
那么我该怎么办？

B:I'm sorry. I can't help you without a proof of purchase.
很抱歉。没有购货单的话，我帮不了你。

A:I'll go home and look for it, then I'll be back.
我回家找找，然后再回来。