Air New Zealand has discarded Sabre as an option as it shops around for a replacement reservation system.
Amadeus, supplied by a Madrid-based company of the same name, is still in the running, as is Lufthansa Systems.
Air New Zealand spokesman Cameron Hill says the company is in ongoing discussions with a number of potential suppliers of a replacement for the existing CARINA Air NZ system and Ansett Australia's MERLIN system.
Hill says the discussions have been wider than just the reservation components and have also covered areas such as network planning, fares management and customer relationship solutions.
The successful supplier will work with the airline and Cap Gemini Ernst & Young to implement the new system.
Last year Amadeus, signed a 10-year agreement with Qantas to operate and further develop reservations, inventory and departure control systems for the airline. As part of the deal Amadeus is setting up a support centre in Sydney.