50 ml is a small packaging, but that also means you can take it in your carry-on when traveling. A fragrance from Sisley could work well for a number of occasions.
From Cult Beauty
Sisley Paris Soir de Lune Eau de Parfum (Various Sizes) - 50ml
Perfumes Club
Soir De Lune eau de parfum spray 50 ml
This product is also available at 1 unverified store.