おつかいに行く

errand  /'erənd/ noun エｧﾗﾝﾄﾞ お使い

★ a job that you do for somebody that involves going somewhere to take a message, to buy something, deliver goods, etc.

run an errand

run some errands

He often runs errands for his grandmother.

Her boss sent her on an errand into town.

お使いのお願いがあるの　I have an errand for you.

お使いに行ってきてくれない   Can you go run an errand for me？

妻のためにお使いをしています　I'm running a few errands for my wife.

これが私の初めてのおつかいです　This is my first time running an errand.