[He sees the way she angles her hand, and delivers a kiss to the back of it -- he's not so impolite as to refuse her that, since she's obviously used to being given a formal greeting. It isn't how he'd choose to greet someone, man or woman, but he won't begrudge her the formality, even if it seems a bit outdated to him. He has no particular desire to look rude.]

I don't think you're exactly in my debt. You're my employee -- I'll be paying you to do your job. No indebtedness required.