请在收据上签字。
Qǐng zài shōujù shàng qiānzì.
Please sign the receipt.
我不需要收据了，谢谢！
Wǒ bù xūyào shōujù le, xièxie!
I don't need a receipt, thanks!
请你签收收据。
Qǐng nǐ qiānshōu shōujù.