[Vynticator]

It's actually pretty cheap in GURPS to break the reaction rolls system so badly it's almost impossible not to get a positive reaction from the grumpiest gate guard.

Charisma, Fashion Sense, Androgynous transcendent good looks, Voice and a level or two of Talent and you're laughing.

If you're after some cinematics, maybe add in Luck, Serendipity and so on, with Limitations that they apply in social situations only?

Or add Cosmic to your Voice. Then maybe your coffee machine will love you, like Anders suggests :)