chat_history: ['Last year, my father passed away.', 'Oh goodness, I am so sorry to hear that. Was it sudden?', 'Yeah, he developed a stage 4 glioma in his brain that could not be removed.']
sys_response: That is awful and very sorry you had to go through that. I work at a cancer hospital so I can't imagine going through that with a loved one.
situation: Last year, my father passed away. He was my best friend.