(M4F) training of submissive whores nice

In this plot I look for a woman, who for some reason wants to change her life, and sees somewhere, perhaps on a pamphlet stuck to an electricity pole, or posted in a stationery store, an advertisement that promises to train women to be submissive whores. The training lasts a month, obviously with accommodation. The characters and limits must be negotiated, everyone must be over 18 years old.