Today, intelligent assistants, such as Apple’s Siri, becoming a part of our everyday life. While there have been many studies focused on technologies, there are no studies dealing with design issues at the initial stage of the design, the stage prior to system implementation. Although the designers had a lot of questions in the design process, such as how the personality of virtual assistant should be, how users could discover the way of interacting, the designers had to rely on imagination. In this paper, we present a user-friendly way of designing intelligent assistant which allow designers and engineers to explore the possible design problems and solutions through user participation, before all the complex systems are ready to run. Through a low-tech approach involving two users, we could understand the behavior of users with intelligent assistants in an easy and fast way.