To provide a automatic reservation telephone call method in which the opportunity of client acquisition is not missed without loading burden on a client even when there is an application after the office hours at the window.

An ATM 16 urges a client to make reservation of a desired transaction and transmits application information acquired by the operation. A CPU 11 of a automatic reservation device 10 receives this application information and stored it in a reservation information storage file 14 of a storage means. Then, the time to perform telephone call to the destination is determined and at the determined time, a contact destination 33 of the client is called from terminals 24-26 to be used by operators. At the telephone call time, information on the client acquired from a host 21 or information containing the application information of the client is displayed for reference on output devices 27-29 provided in the terminals 24-26 to be used by the operators.