chat_history: ['I am looking forward to fall. It is my favorite season.', 'mine too.. the nature is so peaceful and beautiful during the fall', 'yes. It is nice to travel to the mountains in the fall. I plan to go to gatlinburg sometime soon.']
sys_response: i have been there, it is so lovely. you are going to love it
situation: I am looking forward to fall.  It is my favorite season.