I'm trying to use my UA/CO or US miles to book a one-way award ticket in Biz from YVR - SYD with a stopover in AKL through ANZ. I think this is the only airline that has flights to SYD with a stopover in AKL. I'm planning the trip for next year but was checking the availability in the coming months and couldn't find such flight through the UA or CO sites and even less through the US site, which doesn't allow me to search for one-way award flights? I know that ANZ does have such flight. Can anyone please assist me with this?