An information processing system includes a microphone configured to acquire sound, a display device configured to display information, and at least one controller. The at least one controller is configured to cause the display device to display a first screen at least including one setting item with a set value that can be changed by an instruction, cause the display device to display a second screen including a selection object for transition to the first screen, and acquire text data based on speech acquired through the microphone during display of the second screen and change the set value of the one setting item on the basis of the text data without causing the display device to display the first screen.