How do you say?

1. Have a nice flight.

2. Travel safe.

3. Have a good holiday!

4. Please call us when you get there.

5. Take good care of yourself.

Thanks in advance!

my try;

Thank you! Waiting for a native speaker to confirm.

I´m pretty positive that armegon is Turkish

I always say ´kendine iyi bak´ for no.5

 Really? It is good to know that .

Since the verb bak(mak) also means "look after", "kendine iyi bak" should be translated as "look (good) after yourself". "Kendine dikkat et" seems to be closer to "take care of yourself" ... But after all they more or less have the same meaning and you are free to pick either one...