It's nice of you to see me off.
1.It's nice of you to..某人（做某事）真是太好了
It's nice of you to help me.
It's nice of you to say so.
2 see sb off 为某人送行
We all went to the airport to see her off.
A:It's nice of you to see me off.
B:It's my pleasure.Hope you'll visit Beijing more often.
A:Thanks.Stop here now.
B:Ok,I hope you have a good trip.Thanks so much for your cooperation,Mr Simpson.Give my best wishes to Mr.Green.
A:Ok,I will.Goodbye and remember to look me up if ever you're in Paris.
B:Goodbye and all the best.
A:Ok,bye for now.