created arrays for Customer Name and Email.
created appropriate get/set methods to use seatIndex

modified for loops to use enhanced for loops
created arrays for Customer Name and Email.
created appropriate get/set methods to use seatIndex

modified for loops to use enhanced for loops
Modify MainWindow to pass seat Class (First/Economy) to the ticketdisplay routine,

moved the Seat initialization variables out of createseats so that we could determine the seat class based upon last seat selected.