Hard to decipher what you're asking, but:If you buy a ticket A-B-C // C-B-A, and you get off at B and don't take B-C, your remaining flights (C-B-A) will be automatically cancelled.
He may have done it as two one ways.
Hard to decipher what you're asking, but:
+1
He's basically asking how to do a hidden city ticket, answer- make it two one ways. I personally wouldn't risk a hidden city to somewhere that far away, but to each his own.