French phrase
Désolé, je ne suis pas ~.
Meaning
Sorry, I am not ___.
When to use it
Politely states that the speaker is not in charge. Often used to redirect an inquiry to the appropriate contact.
Example dialogue
Désolé, je ne suis pas le responsable.
Sorry, I am not the person in charge.
Le responsable est Mme Dupont.
The person in charge is Ms. Dupont.