Thank you vangiespen very much, you have helped me realized that my major problems and avoided a possible failure exam :)
This should be your second paragraph instead of your introduction.
Yes you are right. I meant to restate the prompt in this way but it seems that I added a few unnecessary ideas which should rather go to latter paragraphs.
You also need to fix or finalize what your real opinion on the matter is.
I am confused. My opinion was that non-essential flights should NOT be cut, or in other words, discouraged, that was why I said people should be able to choose whatever means of transportation, including cheap flights. Maybe this statement was a bit ambiguous, because it could also mean that people do not necessarily choose cheap flights...