Chatbot UX and User Perceptions -- Should a Chatbot Disclose Itself? Implications for an Online Conversational Retailer -- Too Informal? How a Chatbot's Communication Style Affects Brand Attitude and Quality of Interaction -- User Perception of Text-Based Chatbot Personality -- The Ontological Classification of Conversational Agents. An Adaptation of Piaget's Equilibration Theory -- Show, Don't Tell. Reflections on the Design of Multi-modal Conversational Interfaces -- Social and Relational Chatbots -- Questions to Loving a Chatbot: Are People Willing to Self-Disclose to a Chatbot -- "I'm Here for You": Can Social Chatbots Truly Support Their Users? A Literature Review -- Grätzelbot: Social Companion Technology for Community Building among University Freshmen -- Chatbot Applications -- Heuristic Evaluation of COVID-19 Chatbots -- Go to Chapter X to Explore Interactive Narrative on Smart Assistants -- Conversational Agents to Promote Children's Verbal Communication Skills -- Chatbots for Customer Service -- More than FAQ! Chatbot Taxonomy for Business-to-Business Customer Services -- Customer Service Chatbots: A Qualitative Interview Study into the Communication Journey of Customers -- Understanding the User Experience of Customer Service Chatbots: What Can We Learn from Customer Satisfaction Surveys.