French phrase
Je n'ai pas l'autorisation de ~.
Meaning
I don't have permission to ___.
When to use it
States that permission for an action is lacking. It is natural in workplace and administrative situations and remains fairly neutral in tone.
Example dialogue
Je n'ai pas l'autorisation de modifier ce fichier.
I don't have permission to modify this file.
Tu veux que je le demande au responsable ?
Do you want me to ask the person in charge?