"LEKH l'shah-LOME"
Literally: "go to peace"
nesi'ah tovah, motek (× ×¡×™×¢×” טובה, מותק)
Sweetie as in sweet person - Motek Sweetie as in type of sweet citrus fruit - Pomelit
trip as in voyage is nesee'ah. to trip (as in to stumble) is ma'ad.
You didn't say in which language, so I doubt I can help you with this question. In English, it is said correctly: Have a safe trip!
sweetie
You can say "sweetie" or "sweety" to someone as a term of endearment or to show affection. Both spellings are commonly used and understood in English.
boa viagem
"Bezpiecznej podróży!"
Turvallista matkaa!
Tenga un buen viaje de regreso is have a safe trip home in spanish.
nesi'ah mufla'ah (× ×¡×™×¢×” מופלאה)
khair nal jao
ασφαλές ταξίδι [asfales taxeethi]