You can't just look and find slaves. It sorta just happens. You form a relationship with someone, and then pose the idea. If they're comfortable with it, you move forward.
It's not like you just go to "Slaves R' Us."
I'm sure there's some girls in your area who would be interested in that sort of a relationship. It takes a lot of work, but it can be worth it. That is, depending on if they end up being completely insane. 8D