This study investigates the application of ChatGPT personalization in the development of administrative assistants for university students. With the increasing complexity of administrative tasks and growing student numbers, there is a need for effective and personalized solutions. ChatGPT, with its advanced natural language processing capabilities, offers a promising method for providing accurate, timely, and personalized support. We implemented a personalized ChatGPT system to assist students with various administrative tasks and conducted a survey with 76 students to evaluate its effectiveness. The results showed that 65.8% of students found the ChatGPT assistant easy to use, and 54% rated the information provided as accurate and useful. Additionally, 44.7% of students reported that the system saved significant time and effort, demonstrating the effectiveness of the system. While feedback was positive, the study also identified some areas for improvement, such as increasing personalization, improving response times and ensuring greater accuracy of information. These findings indicate that although the ChatGPT assistant is effective, continuous optimization is needed to fully meet student needs. In conclusion, personalized ChatGPT-based administrative assistants have the potential to significantly improve administrative support for college students. However, there is a need to continue improving data accuracy, personalization, and user experience. This research provides valuable insights into the application of AI in education, contributing to the development of more efficient and personalized administrative solutions.