Provided are a system, a method, and a program of banking operation support for supporting execution of accurate and efficient banking operations. A control unit (21) of a support server (20) acquires external state information, a financial transaction condition, customer state information, and a financial transaction state of the same time period, from a back-end system (40); performs machine learning using a data set made up of the acquired pieces of information as learning data, and generates a customer action prediction model which associates the financial transaction condition with the financial transaction state; and calculates, for a current external state and a current customer state, a financial transaction condition corresponding to a target value of a transaction state using the customer action prediction model.
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