In recent years, chatbots have become a common way for companies and organizations to communicate with their customers and users. In this book, we will explore the world of chatbots and the role of ChatGPT, an NLP model developed by OpenAI, in chatbot development. We will provide a technical guide to ChatGPT, including how it works and how to use it to build chatbots. We will also showcase several case studies of ChatGPT in action and discuss...