I tell the client that I've run out of words, and do they need me to clarify anything or are there any issues the reading hasn't touched. Then when they're all done, I thank them, invite them to come by in a couple of months and let me know how things are going, get paid, say goodbye, and shuffle the reading off the deck I was using.
As a qualified person, I count people into and out of hypnosis. I've never thought of doing a reading with the client in a hypnotic trance before, and I don't really like it. If I were to try it at any stage, I'd count them out of it.