French phrase
Je ne veux pas vous retenir.
Meaning
I don't want to keep you any longer.
When to use it
A polite way to say the speaker will not delay someone. Often used to end a call or meeting gently.
Example dialogue
Je ne veux pas vous retenir.
I don't want to keep you any longer.
D'accord, je vous envoie le rapport cet après-midi.
All right, I'll send you the report this afternoon.