Bon voyage, chere soeur.
safe trip mean passe un bon voyage in french
for you, my darling -> pour vous, ma chérie
People sometimes say 'safe journey' or occasionally use the French 'Bon Voyage'.
Bon voyage would be close enough.
Bonjour chérie
Ma cherie.
mon cheri
Tu me manques, cheri.
belle ma chérie
my trip to france
Mais oui, mon ami.