chat_history: ['The other day I got on a roller coaster for the first time, and I almost pooped my pants because we were so high up.', "Oh wow, now that's funny! I've only been on one roller coaster and it was rather small, but I loved it!", "This roller coaster was one of the biggest in the world and i'm not good with heights."]
sys_response: Oh wow! I'd love to go on a much larger coaster than the one I road. But it might be scarier than I imagine.
situation: I rode a roller coaster.