chat_history: ["It was my birthday today, so my family organised a party that I didn't know about.", 'Happy Birthday.  That was so nice of them.  I bet you were surprised.  Was there cake?', 'Oh yeah, the surprise was the cake being thrown in my face!']
sys_response: haha that sounds quite messy, but I hope that it atleast tasted good
situation: surprise birthday party in which i got cake thrown at my face