So I suck at small talk and never used online dating apps.

Once I get the girl talking to me, how do i transition into finding out what they are there for? (sex, dating, or friendship). Lets say they say sex, what do i say next? Do I just ask them if they want to go for drinks?

Also, do a lot of girls just say dating when they just want to have sex? Or do they actually just tell you sex?