May I make (so) bold (as) to ask your name, Sir?

我斗胆问一下您尊姓大名， 先生。

《新英汉大辞典》

A: May I have your name and contact number, Sir?

先生，可否告知我你的名字及联络电话号码？

youdao

They've never heard the name before. Sir.

他们从来没有听过这个名字，阁下。

youdao

What's your name sir? Stand up and shout.

你叫什么名字,请站起来大声点说

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