French phrase
Votre numéro de dossier est ~.
Meaning
Your case number is ___.
When to use it
States the number assigned to a customer's case. Used in formal customer service communication, often by phone or email.
Example dialogue
Votre numéro de dossier est 12345.
Your case number is 12345.
Merci, je le note.
Thank you, I'll make a note of it.