NOT NULLED [I NEED HELP] add Airlines Code into PHPTRAVELS - PHP Booking Software v9.0

Hello everyone, I have installed this source code. Works fine, but I would like some changes in the orange arrow and orange underline. I want to add the airline code after the airline name and before the flight number. For example: VietJet Air VJ0162. In which: VietJet Air is the name of the airline. VJ is the airline code and 0162 is the flight number.
Please help me.