Designing Bots: Creating Conversational Experiences
The key to this book is to note that it’s called “DESIGNING bots,” not “DEVELOPING bots.”
This book is about all the planning and forethought that goes into create a bot in the generic sense (though, the author works at Slack). It’s about branding, personality, conversation flows, etc. It has nothing to do with actually building the bots, since that would be more platform-specific.
This is a book for product or project managers, really.