Elevator system optimizing the registration of a destination call and the car assignment to a registered call

An elevator system having a destination call registration device which accepts an operation of registering a destination call by specifying a destination floor of an elevator and an exit floor selection part which is provided in the destination call registration device and by use of which a user selects an exit floor provided with an exit of a building in which the elevator is installed as a destination floor of the destination call, the elevator system comprising:

• an exit floor determination part which determines, on the basis of predetermined conditions, a specific floor as the exit floor from candidates for an exit floor which are set beforehand as floors capable of being selected as the exit floor provided with an exit of a building among a plurality of floors of the building;
• and
• a destination call registration part which registers the destination call in which the specific floor determined as the exit floor by the exit floor determination part is a destination floor, in the case where the exit floor selection part is operated by a user.