As an air traffic controller of 33 years experience (retired) I have already posted:
The use of Goodnight etc, although non ICAO standard phraseology, is the norm.
Can we have no more posts querying the use of it.
It has no relevance.
Dave
Similar ATC experience, half of it in this region.
While I agree with you on the "goodnight" bit, its the "alright,..." that sounds a bit odd to me togther with the lack of callsign if that is the case.
I've spoken with hundreds of MH flights over the years and can't recall anyone acknowledging a frequency transfer with just "alright, ......"
Granted he is answering his own countrymen ATC, so maybe a little more familiarity crept in there.