This is what I’ve come up with for dialogue Talents, but I don't think they’re a good idea. They kinda duplicate the point of the Abilities.
Talent: Politician - Boosts your chances of succeeding at Charm checks, but lowers your chances at Intimidation checks.
Talent: Brute - Boosts your chances of succeeding at Intimidation checks, but lowers your chances at Reason checks.
Talent: Dilbert - Boosts your chances of succeeding at Reason checks, but lowers your chances at Charm checks.
(All of the other ones I could think of calling this one were "Wallflower", "Actuary", and "Accountant", but none seemed appropriate. I'm sure there must be a name for some boring guy who is smart and no one likes. For now All I can think is to call him "Dilbert", but that's not going to be acceptable in the final.