Your pumpkin bread is dry most likely from over baking. Most pumpkin desserts are very dense and moist thanks to the addition of another liquid/wet ingredient aka the pumpkin. The pumpkin, eggs, oil, and whatever wet ingredient are used to keep things nice and moist and not dry. If your pumpkin bread is dry, you have most likely overbaked. It is a fine line of not under baking and over baking. That is what I like to use a toothpick inserted into the middle to check the doneness. It should come out clean or just with a few crumbs left on top.