Excuse me, I can't get by.
勞駕，請讓開點路。
Excuse me, you're wanted on the phone.
對不起，有你的電話。
If you'll excuse me, I must go and mingle.
對不起，我得去和其他客人聊聊。
Now if you'll excuse me, I'm a very busy man.
如果可以，我先行一步了。我很忙。
Excuse me, is this your seat?
對不起，這是您的座位嗎？