A fancy name for a person that has access to Google and who's job is to search hotels, restaurants, airlines, etc. in order to book reservations for people that are too lazy and/or rich to do it themselves.
Concierge: Thank you for calling concierge services, how can I help you?
Mr. Smith: I'm flying into NYC this weekend and need to book the best hotel and booty bar please.
Concierge: Sure (googles "best hotel in NYC" then "best strip club in NYC" and proceeds to book reservations). Mr. Smith, your reservations have been made.