A reservation system is a tool used by businesses, such as hotels, airlines, and restaurants, to manage bookings and allocate resources. It allows customers to secure a spot or service in advance, ensuring availability and helping businesses optimize their operations. These systems can be manual or automated, often featuring online platforms where users can check availability, make payments, and receive confirmations. By streamlining the booking process, a reservation system enhances customer experience and improves efficiency for businesses like airlines, hotels, and restaurants.