chat_history: ['He actually came back with a gold medal, I was actually doubting him for a while.', 'Who came back with a gold medal?', 'My friend, he won the 100 metre sprint carnival.']
sys_response: Oh, nice. Well, if you work upon on something, anything is possible if you work upon it.
situation: He actually came back with a gold medal, I was actually doubting him for a while.