The honorific attached to his name stopped his response for the slightest moment; it was definitely not something he had ever heard before. That was new.

So was being told he had met someone he never remembered meeting... and he remembered every insignificant face he had ever come across, names attached to them or not. This girl's was not one he recognized.

Worrying? Yes. But she must be mistaken - as unlikely as that seemed. "I can't say I recall this meeting. Where have we met before?"