Remember what it is - a language model. You can be really specific about how you want the responses, because not everybody will want the default style.
If you wanted them in Haiku format, just tell it that all responses should be in Haiku format, and that's precisely what you'll get.
I'm consistently surprised at how much better ChatGPT's answers are. While both are prone to making up nonsense, Bard seems much more likely to do so.