Thanks for the video. I did my PPL in the UK so coming to America was a bit of a radio culture shock. I think "looking for traffic" and "traffic in sight" are the ICAO phraseology, and will work everywhere. Flying to France, you might confuse a French controller by saying "tally ho".
Having thought about it some more, the statement about "roger" not being allowed was probably missing some context. He probably meant it in the context of an ATC instruction that requires reading back.
Having thought about it some more, the statement about "roger" not being allowed was probably missing some context. He probably meant it in the context of an ATC instruction that requires reading back.