the best calamari salad

the best calamari salad, tender like it should be not like a rubber band. never boil only saute for the best flavor.
3 piece cleaned squid or 3.5 oz. , red onion, celery( peel first ), 6 grape tomato cut in half, 1 T. seasoned rice vinegar, 2 T. olive oil, scallions, 1/2 tsp. salt and pepper, 1/2 tsp. cillantro