You'll have to develop a bus booking app for Sri Lanka. Which should have 4 types of users: Driver, Bus Booking Agent, the user (passenger) and the admin. This is an urgent project and the app must be built for android and the ios simultaneously using the cross-platform feature. The database should be firebase. You'll have to consider multi-threading and avoid multiple reservations for the same seat. (Because there could be several other vendors for bus seat reservations). We'll be providing with the SMS gateway (For account creation - to send OTP and for the notifications) and the payment gateway. We mentioned the requirements in the attached document here. Your profile, budget and the timeline will be considered to award the project. Further, please do not under budget the project. If you do so, we'll consider it as a fake proposal.
I will design and develop a Bus Booking Application for your given set of rquirements on Urgent basis. Please get in touch to discuss more in detail and start with the work ASAP. More detailed discussion in chat.
men i am also app developer ios/android have look my profile and i read the your discription and i will develop your bus booking app like this [login to view URL]