People ask questions this way sometimes when they're being polite:

If you could just move over there to the side...

If you could email me the form you were talking about...

Instead of finishing the sentence by giving a conclusion to the "if" clause, the speaker just lets the sentence fade off. The meaning is "Please do this" but it sounds less direct.

Sometimes people do finish the sentence with "that would be great" or "I would appreciate it":

If you could turn down the volume just a little, I would really appreciate it.