I have used the following induction.
(pre-talk)
I want you to put your hand on mine(they place their hand on yours).. and take a deep deep breath.. as you let it go.. close your eyes all the way down.. all the way down.. legs strong beneath you.. remaining upright as you go deeper.. and deeper.. and all the way into trance.. now(let their hand drop)
(proceed with deepening&suggestions)