This document discusses the role of deep learning and data science in chatbots. It begins with defining key concepts like deep learning, which uses neural networks to model complex problems, and data science, which uses principles from math, stats and AI to analyze large amounts of data. It then explains that chatbots are computer programs that simulate conversations, and that deep learning chatbots learn from data through machine learning algorithms, while data analytics helps chatbots store user interaction data. Important applications of chatbots discussed are in healthcare, education, travel and IBM's Watson Assistant. The document concludes that chatbots enhance customer service through natural language interactions.