A method includes acquiring, on a basis of a restaurant ID, menu information indicating one or more foods provided by a restaurant over a network from a second server associated with the restaurant corresponding to the restaurant ID, transmitting identification information stored in an information terminal to a first server and acquiring classification information from the first server on a basis of the identification information, generating a personalized menu for the user corresponding to the classification information on a basis of the menu information and the classification information, displaying the personalized menu through a second operation screen for accepting an order of a food to be provided by the restaurant, the second operation screen being displayed on a display of the information terminal carried by the user, and transmitting food order information indicating the food selected from the personalized menu and a seat ID to the second server.