Translate the following English sentence to French:
"Both the Group of the Party of European Socialists and the Group of the Greens/European Free Alliance have requested that the debate on the oral question to the Commission on the subject of night flights and aircraft noise levels be postponed until the April part-session in order to have a little more time to prepare the matter."
Les groupes PSE et Verts/Alliance radicale demandent que le débat sur la question orale à la Commission relative aux vols de nuit et aux nuisances sonores soit reporté à la période de session d' avril, afin d' avoir un peu plus de temps pour préparer ce dossier.