Also as a sidenote...don't ask for a happy ending. Long story, very short. Police officers and massage board agents will ,almost obsessively, ask for a happy ending. To answer this is entrapment. Allow the masseur to offer it ,of they offer that at all.
This is for the actual practitioners, "accidently" brush your body against theirs. If the client flinches or pulls away, treat them as a police officer. If they touch you back, no worries, they are not law enforcement, only horny.