Office Query

I like when people call me (people from my place of employment) to work through something they are working on and they don't really need me in order to figure out the answer or solution at all, but I'm somehow connected to said issue and they think I need to know what they are doing or something and thus they call me. So I listen, on the phone, as they fix whatever it is they can, and I say "uh huh" and "mm hmmm" and they mumble and mumble in my ear until they finally reach a conclusion they like, and say, "Ok. Ok. That's better. Thanks Sarah" and I say, "No problem" or "You're welcome." And I, knowing full well I've done absolutely nothing, hang up the phone with no clue as to what just happened. But hey! Apparently it's fixed!