chat_history: ['My wife and I have tried to have a baby for over three years, and had given up hope.  Two weeks ago, we found out she was pregnant.']
sys_response: I am so happy for you! Congrats!
situation: I found out two weeks ago that I am going to be a father.  It came as quite the shock, because we have been unable to conceive for the last 3 years.  I'm stoked.