The crime of sexual conduct with a minor under the age of fifteen involves two elements: (1) the defendant intentionally or knowingly engaged in sexual intercourse or oral sexual contact with another person; (2) the other person has not reached his or her fifteenth birthday. See A.R.S. 13-1405 (Supp. 1999). An attempt to commit a specific crime occurs when a person, "acting with the kind of culpability otherwise required for commission of an offense, . . . intentionally does or omits to do anything which, under the circumstances as such person believes them to be, is any step in a course of conduct planned to culminate in commission of that offense." A.R.S. 13-1001(A).