Based on the computing test:

Conditions & Requirements:

Destinations:

• London → A
• Paris & other parts of Europe → B
• Asia → C
• Africa → D

For children, code will be un-capitalised.

Flight Time:

2200 - 0600: Night Flights, country code to be uncapitalised.

Gender:

Male → X

Female → Y

For children, x and y.

Meals:

American → H