R:Excuse me,sir.Did you remember to return your key?
接待员:对不起，先生，请问您的钥匙退了吗？

G:Oh,I'm sorry!I almost forgot. Here you are.
旅客:对不起，我差点儿就忘了，给您。

Thanks for all your help.
谢谢您的帮助，

By the way, you were all so kind to me and my family.
顺便说一下，你们对我和我的全家真是太好了。

R:It was our pleasure.
接待员:不必客气。

We hope you enjoyed your stay with us.
我们希望您在这里和我们一起度过的时光非常愉快。