English: Do you need a bag?
French: Avez-vous besoin d’un sac?
You might ask the passenger if they need a bag to put their duty-free purchases in.
In English, we would say “Do you need (something)?” In French, we literally say “Do you have need of (something)?” "Do you need..." is a phrase that you’ll encounter and use often, not only in this context but in other contexts as well.
Vous avez=you have
Avez-vous?=do you have?
Besoin (m)=need (noun)
Avez-vous besoin de…?=Do you need…?
Un sac (m)=a bag
“Avez-vous besoin d’un sac?"
You can also ask "Voulez-vous un sac?" "Do you want a bag?"
Vous voulez=you want
Voulez-vous?=do you want?
Want to learn to speak the French you need to work as a flight attendant? Learn even more with Canadian French for Flight Attendants.