Sometimes it is not as much about the "dirty talk" as it can be about feeling that someone wants to speak to you, that someone is interested in what you have to say, or someone just plain likes you. Calling a phone sex service is kind of an "intimate" thing, and I believe the experience should be too.
If you're looking for a woman who can actually hold a conversation--in addition to being able to get hot and nasty on the phone--try me out! I am curious about every kind of sex play. I would love to talk about your fantasies, my fantasies, and how exactly you want me to get you off--with my mouth? My pussy? My ass?