Many subtle variations, but this works - best made a few minutes before likely to try and enter the airspace.
Initial call on a quiet day: "Controller Callsign, Aircraft Callsign, for basic service and zone transit"
Initial call on a busy day: "Controller Callsign, Aircraft Callsign, good afternoon".
Once asked to pass your message
"Aircraft Callsign, Type, Route, position, altitude, altimeter setting, squawking, request"
Or words to that general effect.
G