DO NOT BOOK ANA FLIGHTS THROUGH UNITED! You are only allowed middle seats! And there is no way to book seats together or other than middle seats, even for a fee. I have booked many trips on United that used partner airlines--Lufthansa, Austrian--so why would I think ANA would be so different? United instructed me to reserve seats on ANA but, of course, that was after I paid for the tickets. I foolishly assumed it was just some glitch since I could see plenty of seats on the ANA flight when I looked on the ANA site. We had V fares, but it's not clear if any fare class on United would allow seat selection. AVOID ANA! They pretended they had no control over this situation (as did United when I called them). I am taking a credit for the tickets and rebooking at a much higher price since it is much closer to departure (end-July). Not a great start to our long awaited vacation in Japan.