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]