When Emirates cancelled our return flights home from New Zealand to the UK in March 2020 due to Covid-19 we had great difficulty obtaining replacements. Emirates were no help whatsoever (to this day they have not provided a refund, an apology or any other contact).
We eventually applied for and received ESTA visas to enable return via Los Angeles and booked Fully Flexible tickets with Air New Zealand direct. The ANZ member of staff was helpful and confirmed that in the event of a change of plan we would receive a full refund (there had been mention of possible repatriation flights being chartered by the UK Government).
A few days later, in keeping with what was going on at the time, their airline partners, British Airways, cancelled our London to Glasgow leg of the trip which would have left us stranded in London Heathrow terminal overnight! When I called Air New Zealand to cancel they agreed the refund. The call handler was very pleasant and although he indicated it may take a few weeks to process, in practice it took just a couple of days. We thought that this was exceptional service in comparison to what we were hearing was happening with other airlines.
Our ultimate route back was via Doha with Qatar Airlines and required a domestic flight with Air New Zealand from Christchurch to Auckland.
Christchurch Airport was quiet and the ANZ staff we dealt with were friendly and efficient in checking us in under different arrangements. The ANZ flight was socially distanced from the point of view that there were three seats for two passengers (in theory a gap in between). In practice this arrangement didn't provide much "distance" as the plane was busy and we had people immediately in front and behind us. Nonetheless the flight was short and on time so no issues.
With many tales of woe relating to the airline industry at that time it was a pleasant surprise to experience very good service, in particular relating to the cancelled flight.