An electronic device includes a processor, and a memory. The memory may store instructions that, cause the processor to display a user interface including items, receive a first user utterance while the user interface is displayed, wherein the first user utterance includes a first request for executing a first task by using at least one item, transmit first data related to the first user utterance to an external server, receive a first response from the external server, wherein the first response includes information on a first sequence of states of the electronic device for executing the first task and further includes numbers and locations of the items in the user interface, and execute the first task including an operation of allowing the application program to select the one or the plurality of items based on the numbers or the locations.