French phrase
Ce n'est pas possible ~.
Meaning
It won't be possible ___.
When to use it
A polite way to decline a request. The phrasing is somewhat formal and works well with clients or senior colleagues. An alternative can soften the refusal.
Example dialogue
Ce n'est pas possible avant la fin du mois.
It won't be possible before the end of the month.
Merci pour l'information, nous ajusterons notre planning en conséquence.
Thank you for the information, we will adjust our schedule accordingly.