https://learn.saylor.org/mod/forum/discuss.php?d=20915
It’s easy to find out what’s going on with the flight. You get a PNR number when you book the tickets. Now, you should know exactly what this PNR number is for. For those who don’t know, the PNR number lets you know what’s happening with your trip. But PNR is an abbreviation for “Passenger Name Record,” a longer term. A “Passenger Name Record,” or PNR, is a record containing essential information on an individual or group of individuals who are scheduled to take a flight. Computer Reservation System (CRS) and Global Distribution System (GDS) providers like Sabre, Amadeus, Galileo, and Worldspan often maintain this data.