chat_history: ['My wife held a surprise birthday party for me. It was totally unexpected and I was shocked when I came home and so many people were there.', "That's awesome, I bet you were overjoyed with it!", "I couldn't believe that no one let the cat out of the bag. It must have been hard to plan."]
sys_response: You never know if someone is going to slip and spoil it for you, that's true!
situation: My wife had a birthday party for me that I didn't know about. I was totally taken aback when all my friends showed up.