| 摘要 |
A set merchandise providing server SA, upon detection of a reduction in the price of an airline ticket in combinations, among combinations of airline tickets and plan utilization tickets, that do not satisfy a desired purchase condition designated by a user, sends, to a facility provider that provides the plan utilization tickets, information prompting a reduction of the price of the plan utilization tickets in combinations, among the combinations of the lowered-price airline ticket and plan utilization tickets, of which the number of hits is zero and that do not satisfy the desired purchase condition. |
