To whom it may concern:
On XX, XXX 20XX I purchased a ticket form XXX to YYY on SITENAME.TLC for travel on DATE 1 and DATE 2.
I received a CONFIRMATION/EMAIL/ETICKET at TIME on XX, XXX 20XX which confirmed that I had a ticket for travel on those date.

I received a CANCELATION/NOTICE that the airline would not honor this fare from “NAME” and s per DoT Regulation 399.88, “(“Therefore, if a consumer purchases a fare and that consumer receives confirmation (such as a confirmation email and/or the purchase appears on their credit card statement or online account summary) of their purchase, then the seller of air transportation cannot increase the price of that air transportation to that consumer, even when the fare is a “mistake.”)

I am hereby filing a complaint against ABC, BCD, DEF. I requested that my ticket be reinstated in full as I had originally booked.
Sincerely,
A. Flyer