I need to cancel an itinerary that I have held, but for the life of me, I can't find the place to do this on united.bomb. From BL1KITW's experience, it sounds like it should be simple, but I don't see any way to do it online.

I see buttons and links for purchasing and viewing/changing the res, but when I view it, it only lets me change individual segments, not cancel the entire thing.

It's not the end of the world (it will auto-cancel eventually), but if I ever need to cancel a held reservation immediately to rebook myself on an itinerary that includes some of the same flights, I'd like to know how to do it!

Any tips?