Ben Sauer is a designer with deep experience as a practitioner, trainer, and theorist around conversational design. He recently left a role as a product and design leader at Babylon Health in the UK which has recently launched a chatbot that serves patients on behalf of the National Health Service. He has also been a trainer for O'Reilly events, is a frequent conference speaker, and has worked with BBC, Pearson, and Tesco in their conversational design initiatives. He has a degree in English Literature from the University of Warwick. We discuss conversational design in healthcare and for other applications, what he has learned, and how voice is changing the way people are thinking about brand trust.