Greek Tomato Salad Pita

got the idea from recipes from Simply in Season and Marth Stewart Living, August 2010

1/2 cup plain yogurt
2 tablespoons lemon juice
1 garlic clove, diced
4 pitas
2 cucumbers, thinly sliced
8 medium tomatoes, chopped
1/2 red onion, chopped
1 cup feta cheese
1/3 cup pitted Kalamata olives, chopped
1/3 cup chopped fresh herbs; basil and parsley

1. Stir together yogurt, lemon juice, and garlic. Toast pitas.
2. Toss together cucumbers, tomatoes, onion, feta, olives, and herbs. Divide yogurt mixture among pitas, and spread. Divide salad mixture among pitas, roll to close.