Over the past decades, mathematicians, linguists, and computer scientists have dedicated their efforts towards empowering human-machine communication in natural language. While in recent years the emergence of virtual personal assistants such as Siri, Alexa, Google Assistant, Cortana, and ChatGPT has pushed the field forward, they may still have numerous challenges. \newline Following the success of the 4th NLP for Conversational AI workshop at ACL, The 5th NLP4ConvAI will be a one-day workshop, co-located with ACL 2023 in Toronto, Canada. The goal of this workshop is to bring together researchers and practitioners to discuss impactful research problems in this area, share findings from real-world applications, and generate ideas for future research directions. \newline The workshop will include keynotes, posters, panel sessions, and a shared task. In keynote talks, senior technical leaders from industry and academia will share insights on the latest developments in the field. We would like to encourage researchers and students to share their prospects and latest discoveries. There will also be a panel discussion with noted conversational AI leaders focused on the state of the field, future directions, and open problems across academia and industry.