The Collaborative International Dictionary of English v.0.48:

Book \Book\, v. t. [imp. & p. p. Booked (b[oo^]kt); p. pr. &
   vb. n. Booking.]
   1. To enter, write, or register in a book or list.
      [1913 Webster]

            Let it be booked with the rest of this day's deeds.
                                                  --Shak.
      [1913 Webster]

   2. To enter the name of (any one) in a book for the purpose
      of securing a passage, conveyance, or seat; to reserve[2];
      also, to make an arrangement for a reservation; as, to be
      booked for Southampton; to book a seat in a theater; to
      book a reservation at a restaurant.
      [1913 Webster +PJC]

   3. To mark out for; to destine or assign for; as, he is
      booked for the valedictory. [Colloq.]
      [1913 Webster]

            Here I am booked for three days more in Paris.
                                                  --Charles
                                                  Reade.
      [1913 Webster]

   4. to make an official record of a charge against (a suspect
      in a crime); -- performed by police.
      [PJC]

WordNet (r) 3.0 (2006):

booking
    n 1: employment for performers or performing groups that lasts
         for a limited period of time; "the play had bookings
         throughout the summer" [syn: engagement, booking]
    2: the act of reserving (a place or passage) or engaging the
       services of (a person or group); "wondered who had made the
       booking" [syn: booking, reservation]

Moby Thesaurus II by Grady Ward, 1.0:

41 Moby Thesaurus words for "booking":
   appointment, bespeaking, borscht circuit, briefing, cataloging,
   chronicling, circuit, date, employment, engagement, enlistment,
   enrollment, entering, entry, hiring, impanelment, indexing,
   inscribing, inscription, insertion, inventorying, listing, logging,
   matriculation, playing engagement, posting, preengagement,
   record keeping, recordation, recording, register, registration,
   registry, reservation, retainment, run, stand, tabulation,
   taking on, tour, vaudeville circuit