Flights
Date of travel.
Check-in times.
Flight dates & times.
Flight numbers.
Frequent flier program number.
The name and location of departing airport.
Airport terminal number.
Transportation to his departing airport information.
How to travel, how long it will take, etc.
The name and location of your arriving airport.
Amount you paid for tickets ahead of time and any receipts or confirmations you received.
Name of travel agent/ booking agent / website source of booking.