The PlanO is a smart scheduler that helps users effectively manage their weekly schedules and activities in a structured and organized manner. It carefully considers academic responsibilities, professional duties, and personal engagements to identify interstitial time slots and redistribute them more efficiently. By doing so, it ensures that valuable free time is not wasted and instead can be used in a more productive or balanced way. Since these intervals are often dependent on dynamic environmental factors such as geographical conditions, traffic density, and weather statistics, the system establishes a flexible framework that remains dependable and responsive to constantly changing conditions. In addition, the assistant suggests the most suitable timings for newly added events, recommends personalized activities tailored to user preferences, and provides timely reminders. Unlike traditional static planners, it is an artificial intelligence-based, proactive, and dynamic scheduling mechanism designed to increase productivity and reduce conflicts.