I will simply ask. If time comes up, I let them know I have the time needed and would not have asked if I didn't. Do they have the time needed? If not, why?

I will simply ask. If time comes up, I let them know I have the time needed and would not have asked if I didn't. Do they have the time needed? If not, why? Answers to that can make sense and can bias the session toward a more productive exchange.