There is provided an information service system, an information service method, and an information service program, the information service system comprising an interactive system 31 that implements an interactive control apparatus 3103 for providing information or executing processing according to an interactive script in response to a request that has been made by a service user through voice or push button operation; an interactive log management apparatus 32 that manages an interactive log related to the usage of the interactive system 31; and a call charge burden ratio calculation apparatus 33 that calculates the ratio of the burden of call charges associated with the telephone information service between an information service provider and service user based on the interactive log managed by the interactive log management apparatus and call charges information associated with a use of the interactive system.