Various embodiments of the present invention relate to a method for providing an intelligent assistance service, and an electronic device performing same. According to an embodiment, the electronic device includes a display, a communication interface, at least one processor, and at least one memory, wherein the memory is configured to store a task customized by a user and mapped to any one among a selected word, phrase, or sentence. The memory may store instructions which, when executed, cause the processor to: display a user interface, configured to set or change the task, on the display; display at least one utterance related to the task as text on the user interface; identify and display at least one replaceable parameter in the utterance; receive a user input, which may be used as the parameter, for selecting or inputting at least one item; and store the task including the item.