How would I go about asking Mr Travolta if he would like to play the part of an angel again?

John Travolts is my first pick to play the part of the magnificant king of the sultans, Angelo. He is a major angel.
The character exists in a new book, but it needs a credible screen writer, yet, before it can be a movie. Any help there?
Angelo is senous, muscular, bald and beautiful, garish and obsesively in love with his angelic mate, Queen Malika. He likes to dance.