Chatbots are fun to use, ranging from simple chit-chat (“How are you today?”) to more sophisticated use cases like shopping assistants, or the diagnosis of technical or medical problems. Despite their mostly simple user interaction, chatbots must combine various complex NLP concepts to deliver convincing, intelligent, or even witty results.

With the advancing development of machine learning models and the availability of open source frameworks and libraries, chatbots are becoming more powerful every day and at the same time easier to implement. Yet, depending on the concrete use case, the implementation must be approached in specific ways. In the design process of chatbots it is crucial to define the language processing tasks thoroughly and to choose from a variety of techniques wisely.

In this talk, we will look together at common concepts and techniques in modern chatbot implementation as well as practical experiences from an E-mobility bot that was developed using the Rasa framework.