I was about to leave the house on an errand, and my husband was getting ready for a dental appointment.
My mother asked me to go on an errand; she wanted me to buy some food.
I had just fastened our pinafores together, and hung them up for a curtain, when in comes Joseph on an errand from the stables.
Captain: I apologize, emissary, but the prince is away on an errand. What brings you to this desolate place?
The boy quickly went on an errand with money clasped in his hands.
The housekeeper and Hareton were invisible; one gone on an errand, and the other at his work, probably.
He bustled the maid off on an errand.
Her boss sent her on an errand into town.