Overlapping bookings occur when two or more reservations are made for the same resource, such as a hotel room, conference space, or rental vehicle, at the same time. This situation can lead to confusion and dissatisfaction for customers, as they may arrive expecting to use the resource only to find it unavailable. To prevent overlapping bookings, businesses often use reservation systems that track availability in real-time. These systems help ensure that once a booking is made, the resource is marked as unavailable for the specified time, reducing the risk of double-booking and improving customer satisfaction.