The stable-helper found out the horse needs a set of horseshoes made, and asked you to look into having the blacksmiths of Bree help make some.
'The horse's stall looks satisfactory for the time being, but it would seem this horse arrived with no horseshoes. I managed to check the hooves without getting kicked, and they're doing fine for now. Soon, though, he will need a set of shoes made. Please head to Bree-town and talk to the blacksmiths to see if one is available to make a set of horseshoes for us.'
A blacksmith in Bree-town should be able to help us make a new set of horseshoes.
The items needed by the blacksmith to forge new horseshoes can be found around the forge area.
Matt Haywood can be found at his forge near the Western gate of Bree-town, and is ready to help make the horseshoes.
The stable-helper in Combe will be happy to receive the horseshoes for the newly arrived horse.