 1) Need To display Appointment Submiter name  
Answer : Done
2) Need to change price as on vehicle type 
Answer : When you Change the Vehicle Type , it will remove the list of services from the detail, you may select services again with new Vehicle Type
3) Need to enter multipal vehicle with single customer name (With Different Service & Category)
Answer : Done ( when the user submit the Appointment , it will notify for success message and remain on the same page with same customer)