Sometimes you get asked something that it is not possible to deliver or something that you do not know how to deliver. And then our natural inclination is to overdo, split hairs, change plans, stress us and others, look for additional information. Everything in the attempt to find the answer.
A good reminder is that “I don’t know” is always a viable starter in these cases. It builds credibility, it opens us to learning, it welcomes new possibilities, and it accepts the idea of failure.
Perhaps some people will not accept it as an answer.
Good luck trying to make them happy in one of the other ways.