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.