An air conditioning system comprising: a first air conditioning device provided for a predetermined space; and a second air conditioning device, characterized in that: the first air conditioning device includes a first detector configured to detect a state of the predetermined space, the first air conditioning device being capable of outputting first detection information detected by the first detector, the first detection information being pertinent to the state of the predetermined space and relevant to a voice direction inputted to a voice operable input-output device; and the second air conditioning device is provided for the predetermined space and includes a second detector configured to detect a state of the predetermined space, the second air conditioning device being capable of outputting second detection information detected by the second detector, the second detection information being pertinent to the state of the predetermined space and relevant to the voice direction inputted to the input-output device; wherein the air conditioning system further comprises: a selector configured to acquire direction information indicating the direction, and select, in order to cope with the direction, at least one of the first detection information and the second detection information; and a transmitter configured to transmit, to the input-output device, output information for output of the input-output device in accordance with the information selected by the selector. a first air conditioning device provided for a predetermined space; and a second air conditioning device, characterized in that: the first air conditioning device includes a first detector configured to detect a state of the predetermined space, the first air conditioning device being capable of outputting first detection information detected by the first detector, the first detection information being pertinent to the state of the predetermined space and relevant to a voice direction inputted to a voice operable input-output device; and the second air conditioning device is provided for the predetermined space and includes a second detector configured to detect a state of the predetermined space, the second air conditioning device being capable of outputting second detection information detected by the second detector, the second detection information being pertinent to the state of the predetermined space and relevant to the voice direction inputted to the input-output device; wherein the first air conditioning device includes a first detector configured to detect a state of the predetermined space, the first air conditioning device being capable of outputting first detection information detected by the first detector, the first detection information being pertinent to the state of the predetermined space and relevant to a voice direction inputted to a voice operable input-output device; and the second air conditioning device is provided for the predetermined space and includes a second detector configured to detect a state of the predetermined space, the second air conditioning device being capable of outputting second detection information detected by the second detector, the second detection information being pertinent to the state of the predetermined space and relevant to the voice direction inputted to the input-output device; wherein the air conditioning system further comprises: a selector configured to acquire direction information indicating the direction, and select, in order to cope with the direction, at least one of the first detection information and the second detection information; and a transmitter configured to transmit, to the input-output device, output information for output of the input-output device in accordance with the information selected by the selector. a selector configured to acquire direction information indicating the direction, and select, in order to cope with the direction, at least one of the first detection information and the second detection information; and a transmitter configured to transmit, to the input-output device, output information for output of the input-output device in accordance with the information selected by the selector.