Word of the day -Aller-retour

Today's French Word of the day is aller-retour (n,m)  Which means  : round-trip

Sentence in French :Je voudrais acheter un billet aller-retour de Londres à New Delhi vers la fin du mois d’Octobre.

English Translation: I would like to purchase a round-trip ticket from London to New Delhi around the end of October.