Passenger Information | Onboard Service
When onboard the aircraft, a headset with microphone for in-flight communication with other passengers and the pilot(s) will be provided.
Just remember to speak clearly and slowly. The microphone is voice activated so a little tip is to begin your speech with a vocal noise (eg. like clearing your throat) and then begin to speak immediately.
It may require a little practice but after a few goes you’ll get used to it. You’ll soon notice that if others don’t practice this simple technique the first couple of words they say are cut off.