Want to dine in Greece with free airfare? "Very cool!" says my friend, eagerly dipping his triangles of fresh pita bread into the Kyra Orektika (house made spreads) neatly tucked into five white, geometric ceramic squares before us.We are at Ammos Estiatorio in New York, an elegant Greek restaurant on Vanderbilt Avenue near Grand Central Station on a summer night, the kind of steamy night... ...