2--If you bring them back with your receipt within seven days, you'll get a full refund. Also, if you need alterations to the pants, just bring them in and we'll do them for free.
 
1-- Sounds good.
 
2-- That'll be $70, please. Will you be paying by cash or charge?
 
1-- Charge. Here's my card.
 
2-- Okay, sir, here you are. Thank you very much.
 
1-- Thank you.
 
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注解：
 
1.policy on returns退货政策 
2.receipt收据 
3.alterations修改 

===================================
译文：

1--你们怎么处理退货的事？
2--如果您在7日之内携带收据退货，就可全额退款。此外，如果您需修改裤子，就把它们带来，我们会免费服务。
1--听起来不错。
2--一共70美元，您要付现金还是刷卡呢？
1--刷卡，这是我的卡。
2--好了，先生，请收回去。非常谢谢您。
1--谢谢。