An electronic device and method are disclosed. The device includes a communication circuit, at least one processor, and at least one memory. The memory stores instructions executable by the processor to implement the method, including obtaining voice data from an external device via the communication circuit, converting the voice data into text data, detect at least one expression included in the text data, when the at least one expression includes a first expression mapped to a first task, transmitting first information indicating a sequence of states associated with performing the first task to the external device via the communication circuit, and when the at least one expression does not include the first expression and includes a second expression different from the first expression, and the second expression is mapped to the first expression as stored in a database (DB), transmitting the first information to the external device via the communication circuit.