Can I change this check into RMB Yuan?
我可以换成人民币吗？

Certainly,sir.Today's exchange rate is 7.97 for US$ 1.
当然，先生，当今的汇率为7.97.一美元

All right.I'd like to change US $ 100,please.
好吧，帮我换100美元

Can I have your name,room number and passport as well,sir?
先生，请问您的姓名，房间号以及护照？

Here you are.Kelvin Redford,Room 202.
这里，凯尔文雷德福202房间

The exchange is RMB 797 Yuan.Mr.Redford,would you please sign this receipt?
换成人民币797元，请您签收？

Of course.
好的

Thank you ,Mr.Redford.
谢谢你，雷德福先生。