Some of these definitely already exist, although your requests are so vague that I'm not sure if they're exactly what you want. The general themes are pretty common, though.
1)
Cookiemonste has the dialogue called "MILF sucking father next door".
Moocer's thread has a dialogue file called Mom.txt under the heading "MILF sucking virgin", if you'd rather the guy was younger.
2)
Kasamaz posted a really sophisticated dialogue called Daughter's Friend. It randomizes her age, hobbies, etc, and is generally regarded as being pretty good.
3)
Rubix has posted a dialogue called Cheating Wife. There's another one by
louise, although you'll want to find/change "vigourous" to "vigorous" or some lines won't play.
4) You know what, that is literally the vaguest request I've ever seen. The only way you could be less specific about what you're looking for is to ask for a dialogue about "a girl".
College student?
Highschool student? With a teacher, a classmate,
the entire football team? Maybe she wants to be a
cheerleader, or she's secretly
really submissive. Maybe she has a penis (in which case
my thread has you covered whether she's giving or receiving - both of the Futa Blackmail dialogues involve female students).
I was going to put links for every single one of those examples, but I kind of gave up halfway through. They're all out there.
If you've more specific requests for dialogues you are unable to find, then by all means ask. But I'm kind of having to guess what you're actually looking for here.
