system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Why is an umbrella useful?


assistant
The top of an umbrella is made with waterproof material attached to a long handle so that it extends over the head and protects its owner from rain. The material folds down so that it can be easily carried when not needed. Often, the handle also collapses so that the umbrella becomes small enough to fit into a bag.