Make the sauce: In a small bowl, add lemon juice, yogurt, olive oil, salt, chives and cilantro. Mix to combine, then transfer into a reusable container.
Place tortilla over flame on stove for about 15 seconds per side, if desired. Lay out on a flat surface and top with lettuce, salmon, tomatoes, avocado and a sprinkle of salt. Fold tortilla up and place wrap in a reusable container.