chat_history: ["I've known my best friend since I was 4 years old.  He joined the Air Force after high school and moved out of state and I was really upset when he left."]
sys_response: Oh it's always sad when someone you care about leaves. Can you at least keep in contact with him?
situation: I've known my best friend since I was 4 years old.  When he joined the Air Force he moved out of state and I was really upset when he left.