A: I want to exchange this DVD player.
我想换台DVD播放机。

B: No problem. Do you have your receipt?
没问题。你有收据吗？

A: That's one thing I never forget.
收据我永远不会忘。

B: Now, what seems to be the problem?
机器有什么问题？

A: This DVD player won't play DVDs.
它不播放碟片。

B: Well, at least you kept your receipt. One moment, please.
至少你能留着收据。稍等。

A: I spent almost an hour trying to make it work.
我花了近一个小时想让机器正常播放。

B: If this one doesn't work, just bring it back.
如果这台还不能播放，拿回来换就行了。