This quest is no longer available within the game.
As with most other fabrics, our stocks of silk are at an all-time low. Our stores are such that we'd only need sixty pieces of silk from you total; we should be able to reach our goal with the support of others.
A benevolent gift such as silk, might I add, would certainly increase your local standing in the community! If you have the sixty pieces of silk cloth on you and are ready to donate them, I'm able to take them from you now.