Build a Website

Hello, I am from Kolkata, India. I want to develop a website where user can book CABS. What are my requirements: First of all I would like to declare that I have workable Mobile App through which an user can book a cab at real time using GPS. I have the App for both USER and DRIVER. Now I want to create a Web Platform where user can perform the same activities which are in App. Some points of features includes: 1) User / Driver can Register or Login 2) User can book a cab from both website and app 3) User's data must sync between app and web 4) User can get the ability to fill the wallet 5) Before confirming the ride, user can choose his/her payment method 6) Email/SMS notifications for each and every instance related to user or driver or admin How the system will be for an User: Say I am an user and want to book a cab. Now after logging in to the website and opt for Book a Cab, the system will auto detect my location and based on this system will show the approximate lowest time require for a cab to pick me up. Now say I agreed and proceed, the system will ask me for providing destination. Meanwhile system will send New Pickup Notification to all the drivers within a radius. Once driver accepts, system will send all details about cab and driver to me via email and SMS. Also there should be an option where I can decide about the payment method for taking this ride. There must have the feature of Coupons and Promotions. Once I start the ride, system will send me a SMS/Email notification and re-send another notification once I reach the destination. The SMS/Email will carry a thank you message along with the Invoice Amount (Final Amount after deducting discounts). Both web platform and mobile app should be synchronized in such a way that an user / driver can view each and every details same in both the platforms. The overall features and logics will be almost as described but there may be require to add / modify / remove some points later. Provide me with a best and cheap detailed quotation on the same. Priority will be provided those who are from Kolkata, India Region and have the capability to perform this project.