Thank you very much for your information.
I will ask ANA for their seat assignment and let you know their exact seat numbers except HND->>BKK for Mr. Uemura and BKK->>HND for Ms. Sekigichi.
Because they travel alone for these sector, I reserved already.
May I know that is there any word to change her last name for Mrs. Uemura on another page in her passport?
Because her last name is still shown “SEKIGUCHI” on her passport.