Bids Are Invited For Accreditation Of Travel And Tourism Agencies To Provide Continuous Issuance, Reservation, Booking, Rescheduling, Alteration, Cancellation, Endorsement And Refund (When Applicable) Of National And International Air Tickets, Including Boarding Tax And International Travel Insurance (When Necessary), With The Application Of A Percentage Discount On The Value Of The Fares Charged By The Airlines At The Time Of Issuance, In Accordance With The Table Below, Conditions And Requirements Established In The Terms Of Reference Contained In Annex I Of The Notice.