To provide a reservation system which make the needs of both a user side which wants to play cheaper and a golf-link side which wants to gather more customers satisfied.

When each user inputs reverse auction conditions by using a terminal part 2, etc., they are stored in an information control part 1 and sent to and stored in many golf-link side information control parts 6 registered through the Internet 8. Golf links which desire to make a successful bid send conditions of a price, etc., to the mentioned information control part 1 through the Internet 8 and the information control part 1 which receives them sends them to a user which applies for the reverse auction. The user which receives them sends information on selected desired golf links to the information control part 1 through the Internet 4 by using a terminal part 2, etc. The information control part 1 which receives the selection information sends it to the information control part 6 and the information is stored. A reserving clerk, etc., of the selected golf links sends information on a reservation number, etc., to the information control part 1, which sends the information on the reservation number to the user.