French phrase
Nous vous serions reconnaissants de ~.
Meaning
We would be grateful if you could ___.
When to use it
A polite request that also expresses gratitude. Common in formal business communication.
Example dialogue
Nous vous serions reconnaissants de bien vouloir nous envoyer les documents demandés.
We would be grateful if you could send us the requested documents.
Bien sûr, je vous les envoie demain.
Of course, I'll send them to you tomorrow.