Q. I would like to figure out the relevant cost in some cost: Flight operation (salaries of flight crew), fuel, maintenance, airport operation (salaries of ground crew), passenger services (meal, baggage), marketing also advertising, sale also reservations, general also administrative, depreciation in some case as follow:

1. A company want to add a new flight to an existing route, also it believe it can re-arrange its staff such that it would not need to add any new personnel.

2. Adding four or more flights to existing routes, it will have to add two pilots also flight attendants.

3. Add a new route, it will also have to add a ground crew also maintenance staff. Could you have me to figure out?