Reservation -> CommissionScheme (via commission_scheme_id)
Traveler -> Traveler (via reference_traveler_id)
Traveler -> Reservation (via reservation_id)
Reservation -> OrganizationPerson (via organization_person_id)
Reservation -> Language (via language_id)
Traveler -> ReservationMode (via reservation_mode_id)
Reservation -> SaleOrderReservation (via sale_order_reservation_id)
Traveler -> TravelerRoomMates (via traveler_room_mates_id)
Reservation -> ReservationGroup (via group_id)
Reservation -> Retailer (via retailer_id)
Reservation -> Organization (via organization_id)
Traveler -> AgeGroupCategoryType (via age_group_id)
Reservation -> ReservationForm (via reservation_form_id)
Reservation -> User (via responsible_agent_id)
Reservation -> User (via booking_agent_id)
Reservation -> Campaign (via campaign_id)