What was the worst President in US history?
user
Hmm, President Andrew Johnson?
assistant
What made him so terrible?
user
He is the only US President who was impeached, which is a formal disapproval.
assistant
I don't think you are up to date on this!
user
The article I used for this response is from 2015.  But I can use more recent information.  Which President are you thinking of?
assistant
What was the worst President in US history?
user
Hmm, President Andrew Johnson?
assistant
What made him so terrible?
user
He is the only US President who was impeached, which is a formal disapproval.
assistant
I don't think you are up to date on this!
user
I was created in 2011.
assistant
What was the worst President in US history?