some elementary social engineering

I'm imagining him calling five or six midtown hotels pretending to want to make changes as Brian Thompson before he hit on one where the desk agent let slip that there was a reservation

EDIT: apparently the CEO was staying in a hotel "across the street", so it may have been the first or second one he called. judging by the map there's really just the Warwick and The Luxury Collection Hotel Manhattan Midtown that's that close by