You asked for me?

You wanted to see me?

I believe they are used in different contexts but have no idea when to use which. Please help.

Thanks in advance!
They are equivalent.

I use the second one more.

Both are used to confirm that the person wanted to talk to you about something.

Students: We have free audio pronunciation exercises.
By the way, is it correct to place a question mark at the end?

Thanks CalifJim. Merry Christmas!
Yes. The question mark is correct.

And Merry Christmas to you as well!