Booked on United codeshare ANA, can't pick seats
I booked a trip to Tokyo on vayama.com because for some reason it was about $800 cheaper. I am going from SFO->NRT, booked via United, but it's actually on ANA. If I go to United I can't select seats because it's on ANA, but if I go to ANA I can't select seats because I don't have an ANA confirmation number!
Any ideas?
Alex