chat_history: ['Last month for my 20th anniversary at my job, my coworkers threw me a party.', 'That is so nice of them!', 'I had no idea till I walked into the office with my boss on lunch. I was completely shocked.']
sys_response: I am so happy for you! Congrats!
situation: For my anniversary at my job, all my coworkers threw me a party. I had no idea until I walked into the office at lunch.