What is the main conflict or problem from the story The Birch Tree’s Gift?

The plot: It's about a guy who finds a lonely sad tree in the woods. The tree tells him why he's sad and the man helps him become happy by making him into a harp. The man needs one more pice for the harp, and he finds the perfect person to help, a young lady. she gives him long pieces of hair to put on the harp and then he plays it.

Explanation:

i don't understand : /