With global flight disruption and border restrictions due to the corona virus threat. If you had a flight departing from NZ from March 2020 onwards, then you can either reschedule your flights or get credit for next 12 months with that airline. I personally booked with flight center and received the store credit without any additional cancellation fee
Were there any conditions with the credit?
@jasmine Sorry for the late reply. The credit is valid for 1 year for any air ticket from the same airline