A Lost Pen

Where did you lose it? A:

When did you lose it? A: I think I lost it today.

Did you check all your pockets? A: I checked all my pockets. B: Did you look in your desk? A: Yes. It isn't there, either. B: It's probably around somewhere. A: Oh, well, it only cost me a dollar. B: Only a dollar? Don't even look for it.