Introduction: Although the interview is the most important and widely used requirements elicitation technique, novice engineers do not receive adequate training in Requirements Engineering (RE) courses. Objectives: The goal of the research is to develop an AI-based interview simulator for helping novice requirements engineers in gaining interview skills. Methods: The research is based on the Design Science Methodology for Information Systems. The simulator is the outcome of six cycles; in each cycle, a proof of concept with additional features is created. Each cycle finishes with evaluation and improvement suggestions. Results: The simulator has been tested with students and results have been promising. The interview simulator understands context-free questions, retrieving the right information related to RE concepts such as Tasks, Goals, Users, Benefits, Stakeholders, Constraints, and Integration. Furthermore, the simulator also makes summaries of conversation, answers meta-questions, and questions based on the context. Conclusions: The simulator has received good response from students, they were able to complete the tasks and feedback suggests that simulator will be surely helpful for novice engineers to improve interview skills. Moreover, the interview simulator will be tested in a real RE course in the academic year 2020-2021. Once it proves effective in the classroom, it will be opened to the RE community for free use and improvement.