Preposition usage: 'For whom are you waiting?' vs 'To whom are you waiting?'

[Pavanhotscan]

Hi Micawber ,

One day , I was coming to office, my friend was standing at the main gate of the office, then i asked him
" For whom are you waiting ?"

or

" To whom are you waiting ?"

which one is correct ?

if none of them is correct, what is the appropriate way to ask a question and also can you give me an explanation .

Regards
Pavan

[Alan]

Hi,

I think I'd like to write:

One day as I was coming to the/my office, my friend was standing by the main office door. I then asked him:

Who are you waiting for?

The question would be asked in this way as this is conversation.

If you said: For whom are you waiting?, this would sound too formal.

Alan
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[Ahmadov]

Nice, I did not know these two sentences had difference in formality...
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