To ensure our application was not only functional but also highly intuitive, we turned to the valuable input of model users. We selected a diverse group, spanning a range of ages, technological familiarity, and travel frequency, to ensure a broad perspective.During the interview sessions, these users interacted with previous versions of the check-in system, and their reactions and comments were meticulously recorded. We noticed recurring issues, like difficulty in understanding certain process flows and a demand for greater personalization during check-in.But our focus wasn't solely on areas of improvement. We also identified what users genuinely appreciated and sought ways to enhance those aspects in the revamped version. Feedback sessions with these model users were essential to refining the prototypes, bringing them closer to a final solution meeting user needs.Once the improvements were implemented, we invited users again to test the new interface. The positive feedback and reduction in friction points were indicative of a successful, user-centric design. These insights helped us provide an optimized, efficient, and, above all, pleasant check-in experience.