English: All done? Finished? Take your time.
French: Terminé? Prenez votre temps.
After service, you're collecting meal trays and drink cups. You may not be sure if the passenger is done with their food or drink. So you can ask politely "all done?" or "finished?" In French, we can ask "terminé?" literally "terminated?"
If they're still working on it, then you can encourage them to take their time. "Prenez votre temps" "take your time."
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