Formal — to staff
Shinkansen
すみません、座席を回転させて対面にしてもよろしいでしょうか? — Excuse me, would you mind if we rotate our seats to face each other? (Shinkansen, Formal — to staff, JLPT N3)
You
すみません、座席を回転させて対面にしてもよろしいでしょうか?
すみません、ざせきをかいてんさせてたいめんにしてもよろしいでしょうか?
Excuse me, would you mind if we rotate our seats to face each other?
Romaji: Sumimasen, zaseki o kaiten sasete taimen ni shitemo yoroshii desho ka? / Reply Romaji: A, dozo. Kamaimasen yo.
Reply
あ、どうぞ。構いませんよ。
あ、どうぞ。かまいませんよ。
Oh, go ahead. I don't mind at all.
Gesture & etiquette
Slightly bow while pointing to the seat rotation lever under the seat.
Always ask the passenger behind you before rotating seats, as it temporarily reduces their legroom during the rotation.