I need a responsive website and companion mobile app that let guests book rooms at my resort with just a few taps. The entire experience has to revolve around booking and reservations—checking real-time availability, completing the reservation flow, and receiving an instant confirmation on screen and by email or push notification. I also want Chat GPT woven directly into the journey as an automated booking assistant. When visitors have questions about dates, room types, or package options, the AI should reply conversationally and, when prompted, guide them through to a completed booking without ever leaving the chat window. Please build both the web front end and native iOS/Android applications, connect them to the same secure database, and integrate a reliable payment gateway of your choice. The final product should be branded to the resort’s look-and-feel, work smoothly on mobile and desktop, and include an admin area where my staff can manage inventory, rates, and see all reservations in real time.