Name of Airlines
Subject: Complaint about the delay
I am writing this letter to make a complaint regarding your flight delay. This flight was scheduled to depart from [Departure airport] on [dd/mm/yr] at [Scheduled departure time]. However, the flight was delayed and did not arrive at [Arrival airport] on time, as promised before. It is a very irresponsible way to behave with the passengers. It is not the first time that we are facing such an issue. Passengers buy expensive tickets because they have important work to do or to be at their desired place for an important reason. But I guess you people do not consider our engagements or tasks important. I had a crucial meeting to attend, which I could not because of your poor service. This is not a professional way to deal with your passengers. We are not paying a handsome amount for such blunders. If we are paying well to your airline, we expect quality service. The flight was delayed without prior information, and we had to wait at the airport for 6 hours. No one of the staff members was cooperating with us. I am sorry, but you have lost your quality. I am never going to travel with your airline again. This was my last and worst experience.
[Fight Ticket Number]