すみません、もし可能でしたら、お釣りは千円札でいただけませんか？ — Excuse me, if possible, could I get the change in 1000-yen bills? (Convenience · Store, Formal — to staff, JLPT N3)

Gesture & etiquette

Gently hold out the large bill, then subtly indicate the desired change with fingers (e.g., make a gesture for small bills).

Do not demand specific change, especially if the store is busy or running low on specific denominations. Always ask politely.