Can I have a receipt, please?

请给我开个收据，好吗？

《牛津词典》

Can I have the receipt?

这是你的收据。

youdao

Now's, the time to return items to the store for which you still have the receipt.

现在，是时候把那些你仍留有购物小票的东西退还给商店了。

youdao

To qualify, customers must return the players by April 30 and have a receipt in hand.

WSJ: Dollars for HD Losers

Be sure to have your receipt or credit-card information as proof of purchase.

WSJ: Dollars for HD Losers

You can plug in the actual cost for an item, if you have a receipt (or can get a copy of one from the previous owner), or pick among price ranges the software generates based on national market surveys.

FORBES: Depreciate It