A first detection unit detects a horizontal air-blowing position inputted by a user using a plan view of a room included in an operation screen. A second detection unit detects a vertical air-blowing position inputted by the user using a profile view included in the operation screen. A generation unit determines an airflow direction of an air conditioner from the horizontal air-blowing position detected by the first detection unit and the vertical air-blowing position detected by the second detection unit, and generates control data that specifies the determined airflow direction.