A: Hi. I'd like to return this radio.
你好，我想退掉这台收音机。

B: All right. Do you have the receipt?
好的。你有收据吗？

A: Here it is.
给你。

B: May I ask why you're returning the radio?
能问下你退货的原因吗？

A: It does not work very well.
它不太好使。

B: Would you like to exchange it?
你想换台吗？

A: No. I'd just like a refund.
不了，我只想要退款。

B: Certainly. This will take only a few seconds.
当然可以。这需要点时间。