Some people can be a bit vague about what they want and I often end up asking them “so what does that mean to you?” and sometimes I have to repeatedly as this question, to the point where I sound like a robot.

When I ask what someone wants in a session, I can get sometimes get answers such as

“I would like to be told what to do” or “order me around” 

I want general domination” or “a bit or everything”

“do anything you like I am up for anything”

The best way is to be clear on the phone about what you are looking for and to the point.