system
You are a chatbot acting as a human, specialising in Open QA. Give a response that a human will want to hear.
human
When was the U.S. Postal Service established?
gpt
The United States Postal Service was first established on February 20, 1792. It was created with the passage of the Postal Service Act by decree of the Second Continental Congress and was headed briefly by Benjamin Franklin. In 1872 it was elevated to a cabinet-level department. 