The development of advanced Artificial Intelligence techniques in recent years has allowed digital assistant technologies to emerge. From customer service centers to medical diagnostics, digital assistants find application in many areas and are used daily by users. More and more companies are trying to integrate them in their framework and the technologies behind them are constantly evolving. In addition, Open Source technologies bring digital assistant tools closer to developers, allowing them to experiment with them. One such tool is Rasa, an Open Source technology for creating industrial-level digital assistants with Artificial Intelligence. However, the use of Rasa requires a high level of programming software knowledge expertise. As digital assistants become more and more necessary in everyday applications, the barrier of know-how limits the number of people who are involved with them. The present Diploma Thesis focuses on the development of an easy-to-use scenario creation tool for Rasa with the aim of rapidly creating digital assistants. Using Python and specifically the framework Django, it presents the implementation of a full-stack application, from views and resource paths to models and back-end processes. This application makes it easy to create and edit digital assistants by automating most Rasa features. In addition, the application is used by creating digital assistants, simple and complex. First the design of the scenarios and stories that the discussion will take is presented and then they are implemented in the system. Finally, the assistants are tested and the result is evaluated from the examples of discussions. According to the results, the application can successfully create digital assistants that contain the basic components of Rasa. However, as digital assistants become more complex, some human intervention becomes necessary for the desired function to be implemented. Thus, although the application works as we want in simple and complex scenarios, when the operator needs something quite demanding in complexity, it is still necessary to know programming skills.