Agent / AI UX design is something I have been dedicating my most of working hours to tackle and enjoy.
Designing Agent is all about staging its intelligence and gain users trust. Layers of neatly knitted "trusts" embedded into the experience to teach users the entity is worth your time. The combination of VUI / GUI to build its personality instead of creating a fake personality by decorating experience. Let users draw the characteristics of the agent by experiencing series of credible actions and answers provided by it.
Designing Xperia Agent is one of many trials of introducing a new experience to our customers. I'm hoping to continue working on this field in the future.