French phrase
Prévenez-moi quand vous êtes ~.
Meaning
Please let me know when you are ___.
When to use it
A polite request to be told when someone is free. The tone is suitable for everyday or business use.
Example dialogue
Prévenez-moi quand vous êtes disponible.
Please let me know when you are available.
D'accord, je vous appelle demain matin.
All right, I'll call you tomorrow morning.