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
What was the duration of the Lewis and Clark Expedition?


assistant
1228 Days. The Corps of Discovery departed from Camp Dubois at 4pm on May 14, 1804. The expedition returned to St. Louis on September 23, 1806.