Joshua Barbeau lost his fiancée, Jessica, nearly a decade ago. For Joshua, getting over her death felt impossible. He was still grieving when he came across a website that allowed him to feel like he was communicating with Jessica again — by creating a customized, A.I.-powered chatbot. San Francisco Chronicle journalist Jason Fagone spoke with Apple News In Conversation host Shumita Basu about how the Jessica bot helped Joshua process his grief.