Stephan Pyles, a celebrated Texas chef, welcomed his friends and patrons from across the city: Highland Park, University Park, Preston Hollow, Turtle Creek, East Dallas, Greenway Parks, Bent Tree, and Oak Cliff.   This new restaurant in the heart of downtown Dallas, across from the Dallas Arts District, is another example of the new vibrancy in the center of Dallas. Samar and the surrounding spaces were packed as people were eager to congratulate Stephan and see the new restaurant.  The sophisticated and stylish crowd was surprised but enjoyed the belly dancing at the end of the evening.