chat_history: ['So the other day was my 23rd Birthday! I had no idea what my friends had planned but i walked into a room, a room which i thought was empty as the lights were all off, and all my friends jumped out and yelled happy birthday! It was such a shock, and felt so nice to have people who cared deeply about me provide me with such an experience!', 'Must of been pretty surprised, Also great to have friends like that.', 'It really was! They even had my favorite kind of cake, chocolate mousse from my favorite bakery!']
sys_response: That must of just made everything even better!
situation: A situation in which friends organize a birthday party for you when you did not expect them to do so. You walk in a dark room, turn on the light and all your friends jump out and say happy birthday and present you a cake.