A: I'd like to return this radio.
我想要退掉这台收音机。

B: Okay. Do you have your receipt?
好的，你有收据吗？

A: I lost it.
我丢失了收据。

B: I am sorry, but you need a receipt for a refund.
很抱歉，但是要退款你需要收据。

A: But I purchased it yesterday.
但是我昨天刚买的。

B: Perhaps you would like to talk to customer service.
也许你得和顾客服务中心说说。

A: Well, that's a start, I guess.
我猜，那是个开始。

B: They're right upstairs.
顾客服务中心就在楼上。

A: That sounds good. I'll take the escalator.
听起来不错。我会从自动扶梯上去。

B: Good luck. I hope someone can help you.
祝你好运。我希望有人能帮助你。