chat_history: ['i am concerned about my father', "Oh no! What's wrong with your dad?", "he is old, and he lives alone.  i just worry because he is getting old.  he gets on ok, but i don't know how much longer.", "Aw, I'm so sorry to hear that. It's not easy to watch our parents age.", "no it's not, but hopefully our kids will do the same for us some day."]
sys_response: We can surely hope!
situation: i am concerned about my father