It's Star Wars. It's just Star Wars, people. Yes, it was re-released as Star Wars Episode IV: A New Hope, but 28 Days Later was re-released as 29 Days Later when they put it back in theaters with the alternate endings and nobody calls it that. The standard naming convention for motion pictures is to call them by the title they were originally released under, then mention any alternate titles below that for means of convenience (such as Braindead, also released under the title Dead Alive.) Obsessively correcting everyone with, "Actually, it's A New Hope" isn't just pedantic and obnoxious, it's incorrect.
Star Wars. Ask for it by name.