Cancel Flight

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Description:
Allows the manager to cancel a flight

Accessible by:
Managers

Accessed from:
View Flight
Itself.

Input parameters:
Flight Number
areYouSure

Output
Cancel Flight Form or Error or success message if the form has been submitted

Pseudo Code:

get/create session
if ('usertype' param in session == 'm') {
   get parameters from the form
   if (areYouSure == 'no') {
      get flight data from the database
      display flight information (from, to, operator, date, time)
      display Cancel Flight Form
   }
   else {
      get all bookings for that flight from the database
      send emails to all customers who've booked the flight
      delete the flight from the DB
      delete all bookings relating to the flight from the DB
      display success message
   }
}
else {
   error message to say user must be logged in and be a manager
}