When I come to you and ask you "do you know where I can find (this thing)?", please don't make me stand there for forever, mumbling "hmmm....it could be here...or there....or maybe even over there...er, wait...what are you looking for?"
I'm sorry. Maybe you didn't hear my question. I was asking if you know where it is. If you don't know, please don't guess for me. I don't need you to guess. I can guess. I'm actually fairly good at it. What I was actually asking is if you know where it is. That's all.
And if you don't actually know where it is, please don't pretend you do and then walk me all the way across the store, find an aisle that I've already looked in, and proceed to stand there and look for me. I've already done that. I'm almost as good at looking as I am at guessing. Again, what I was asking is if you know where it is.
If you don't know, it's ok. I promise. I won't freak out on you. I don't expect you to know where everysinglething is in your store. Just please say "I'm sorry, I don't know for sure, but I will find someone who does".
There. Wasn't that easier for both of us?