Disclosed is an electronic device includes a display, a communication circuit, a processor, and a memory. The memory stores instructions that cause the processor to receive a natural language input from a user, to transmit at least a portion of the natural language input to an external server, to display a first message based on the natural language input and a first indication indicating the user, to receive a first response from the external server, to display a second indication indicating a first engine and a second message based on the first response, to receive a second response from the external server, and to display a third indication indicating a second engine and a third message based on the second response. The first response is generated by the first engine based on the natural language input, and the second response is generated by the second engine based on the natural language input.