Requirements Elicitation (RE) is a crucial software engineering skill that involves interviewing a client and then devising a software design based on the interview results. We propose conditioning a large language model to play the role of the client during a chat-based interview. We evaluate our approach in a study (n=120) using both a qualitative survey and quantitative observations about participants' work. Our positive findings suggest a new way to practice critical RE skills in a scalable and realistic manner without the overhead of arranging live interviews.