Bids Are Invited For Hiring Specialized Travel Agency Services, To Be Performed On Demand And Without Exclusivity, Comprising The Reservation, Issuance, Booking, Rescheduling, Cancellation, Refund And Endorsement Of National Airline Tickets, As Well As The Delivery Of Tickets Or Ticket Orders, Covering All Airlines Operating In The National Territory, Including Intermediation For The Acquisition Of Tickets At All Available Rates, Including Promotional Ones, Assistance In Defining Itineraries, Intermediation For Authorization And Sending Of Excess Baggage, When Necessary, In Addition To Continuous Operational Support, Using Computerized Systems That Ensure Agility, Transparency And Control.