May I have a refill of coffee, please?

May I have a receipt, please?
〈かしこまって〉領収書を頂けますか？

May I have a refill of coffee, please?
コーヒーをもう1杯いただけますか？

May I have a seat near the window?
窓際の席にしてもらえますか？

May I have a small container of coffee?
小さい容器のコーヒーを頂けますか？

May I have a subway map?
《旅／乗り物》地下鉄の路線図をもらえますか？