Translate the following English sentence to French:
"Within the framework of this dialogue, on 30 March 2000 I met members of the platform of European NGOs and a dialogue took place, which focused on two categories of issues. The first category covered the proposals they put forward, which were invaluable for the social agenda."
Dans le cadre de ce dialogue, j' ai, le 30 mars 2000, rencontré les membres de la plate-forme des organisations non gouvernementales européennes, et une discussion s' est engagée sur deux catégories de questions.