An electronic device (700, 1100), comprising: communication circuitry (190, 710, 1110); at least one processor (160, 720, 1120); and a memory (150, 730, 1130) for storing instructions that, when executed by the at least one processor (160, 720, 1120) individually or collectively, cause the electronic device (700, 1100) to: transmit, to a first electronic device (101, 1401, 1501, 1601, 1701) through the communication circuitry (190, 710, 1110), first response data (1412, 1512, 1612) obtained by processing a first speech input (1411, 1511, 1611) corresponding to a first utterance received from the first electronic device (101, 1401, 1501, 1601, 1701); identify a second electronic device (102, 1402, 1502, 1602, 1702) including circuitry configured to detect a second utterance associated with the first response data (1412, 1512, 1612) within a designated time after the first utterance; transmit a wake-up signal to the second electronic device (102, 1402, 1502, 1602, 1702); receive, from the second electronic device (102, 1402, 1502, 1602, 1702), a speech input corresponding to an utterance obtained by a microphone turned on based on the wake-up signal; identify whether the received speech input corresponding to the utterance is a second speech input (1413, 1513, 1613) corresponding to the second utterance; obtain second response data (1414, 1514, 1614) obtained by processing the second speech input (1413, 1513, 1613) based on the first speech input (1411, 1511, 1611) and the first response data (1412, 1512, 1612) in response to identifying that the received speech input corresponding to the utterance is the second speech input (1413, 1513, 1613) corresponding to the second utterance; and transmit the second response data (1414, 1514, 1614) to at least one of the first electronic device (101, 1401, 1501, 1601, 1701) or the second electronic device (102, 1402, 1502, 1602, 1702) through the communication circuitry (190, 710, 1110). communication circuitry (190, 710, 1110); at least one processor (160, 720, 1120); and a memory (150, 730, 1130) for storing instructions that, when executed by the at least one processor (160, 720, 1120) individually or collectively, cause the electronic device (700, 1100) to: transmit, to a first electronic device (101, 1401, 1501, 1601, 1701) through the communication circuitry (190, 710, 1110), first response data (1412, 1512, 1612) obtained by processing a first speech input (1411, 1511, 1611) corresponding to a first utterance received from the first electronic device (101, 1401, 1501, 1601, 1701); identify a second electronic device (102, 1402, 1502, 1602, 1702) including circuitry configured to detect a second utterance associated with the first response data (1412, 1512, 1612) within a designated time after the first utterance; transmit a wake-up signal to the second electronic device (102, 1402, 1502, 1602, 1702); receive, from the second electronic device (102, 1402, 1502, 1602, 1702), a speech input corresponding to an utterance obtained by a microphone turned on based on the wake-up signal; identify whether the received speech input corresponding to the utterance is a second speech input (1413, 1513, 1613) corresponding to the second utterance; obtain second response data (1414, 1514, 1614) obtained by processing the second speech input (1413, 1513, 1613) based on the first speech input (1411, 1511, 1611) and the first response data (1412, 1512, 1612) in response to identifying that the received speech input corresponding to the utterance is the second speech input (1413, 1513, 1613) corresponding to the second utterance; and transmit the second response data (1414, 1514, 1614) to at least one of the first electronic device (101, 1401, 1501, 1601, 1701) or the second electronic device (102, 1402, 1502, 1602, 1702) through the communication circuitry (190, 710, 1110). transmit, to a first electronic device (101, 1401, 1501, 1601, 1701) through the communication circuitry (190, 710, 1110), first response data (1412, 1512, 1612) obtained by processing a first speech input (1411, 1511, 1611) corresponding to a first utterance received from the first electronic device (101, 1401, 1501, 1601, 1701); identify a second electronic device (102, 1402, 1502, 1602, 1702) including circuitry configured to detect a second utterance associated with the first response data (1412, 1512, 1612) within a designated time after the first utterance; transmit a wake-up signal to the second electronic device (102, 1402, 1502, 1602, 1702); receive, from the second electronic device (102, 1402, 1502, 1602, 1702), a speech input corresponding to an utterance obtained by a microphone turned on based on the wake-up signal; identify whether the received speech input corresponding to the utterance is a second speech input (1413, 1513, 1613) corresponding to the second utterance; obtain second response data (1414, 1514, 1614) obtained by processing the second speech input (1413, 1513, 1613) based on the first speech input (1411, 1511, 1611) and the first response data (1412, 1512, 1612) in response to identifying that the received speech input corresponding to the utterance is the second speech input (1413, 1513, 1613) corresponding to the second utterance; and transmit the second response data (1414, 1514, 1614) to at least one of the first electronic device (101, 1401, 1501, 1601, 1701) or the second electronic device (102, 1402, 1502, 1602, 1702) through the communication circuitry (190, 710, 1110).