S: (n) booking, reservation (the act of reserving (a place or passage) or engaging the services of (a person or group)) "wondered who had made the booking"
S: (n) reservation (the written record or promise of an arrangement by which accommodations are secured in advance)
S: (n) reservation (something reserved in advance (as a hotel accommodation or a seat on a plane etc.))
S: (n) reservation (the act of keeping back or setting aside for some future occasion)