An electronic device to perform an operation corresponding to a first user voice when the first user voice is received through the microphone; store, information about an operation corresponding to the first user voice and user reaction information including the user command when a user command is received through the input unit within the first threshold time from when the first user voice is received, or from when the operation corresponding to the first user voice is performed; perform an operation corresponding to a second user voice when the second user voice is received through the microphone; and provide guide information corresponding to the user command on the basis of the user reaction information stored in the memory when the type of operation corresponding to the first user voice is the same as the type of operation corresponding to the second user voice.