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It's kind of like a human-friendly CLI, so I can appreciate that, but I agree that there should at least be clickable defaults.

Sorry for not being more clear: the responses are just buttons that you click. For the majority of any conversation, there's no typing involved.

Why would you use the screen real estate on a "conversation" then instead of just showing the data?

If I had to guess it's probably because the conversational interface is designed to be less intimidating than a barrage of data.