Fast booking mock up

I imagine how easy for the user it would be if the whole Air/Hotel/Car booking process can be done in just one screen.
User doesn't have to go through the standard 6 steps or pages...
1. Search Flight
2. Select Flight
3. Flight Itinerary Summary
4. Passenger Details
5. Payment Details
6. Confirm and Pay

And does not have to press submit button at each page.
I created mock-up screen based on this idea.

Replacing 6 steps Booking process in one step