A system according to various embodiments may comprise: a first electronic device including a user interface and a communication circuit; at least one processor which is a part of the first electronic device or remotely communicates with the first electronic device; and at least one memory residing in the first electronic device or residing outside the first electronic device. The at least one memory may store instructions causing, when executed while being operatively connected to the processor, the at least one processor to: receive a first user request related to calling a chatbot in a character and/or voice-based chat, through the user interface; cause the chatbot to join the chat; receive a second user request for a task for the chatbot through the user interface, wherein the second user request does not include at least a part of information required to perform the task, and the at least a part of the information is stored in the at least one memory; receive a user authentication for sharing the at least a part of the information, through the user interface; and provide the at least a part of the information to the chatbot.