When you ask someone to recommend a service, a restaurant or even a person and they hesitate because they are thinking of an answer, how good do you think that recommendation will be?
The longer they “um” and “uh” and “ah”, what they are really saying is that they can’t honestly and accurrately make that recommendation. Shoud they come up with one you might want to consider asking someone else.
If you are the one being asked and you don’t know who to recommend, just say so. It’s okay to tel the truth. Should the person asking accept your recommendation and it doesn’t work out, like it or not the onus quietly falls on you.