Travel agents use Sabre and/or Amadeus and/or other to access Air NZ fares & ticket t&c's. Its just an interface.
https://matrix.itasoftware.com/ can give some information, but its no substitute for a skilled real travel agent
https://en.wikipedia.org/wiki/Amadeus_CRS
https://www.amadeus.net/home/
http://www.amadeus.com/web/amadeus/e...-AMAD_HomePpal
https://en.wikipedia.org/wiki/Passenger_name_record

Carina is no longer a work horse: its an old broken down slow draft horse that should have been made into dog tucker decades ago.