Double booking occurs when a person or organization schedules two appointments or reservations for the same time slot. This can happen in various contexts, such as in the hospitality industry, where a hotel might accidentally reserve the same room for two different guests, or in event planning, where a venue is booked for two events simultaneously. This situation can lead to confusion and inconvenience for all parties involved. To avoid double booking, it is essential to maintain accurate records and use scheduling tools that help track appointments, ensuring that each time slot is reserved for only one event or individual at a time.