Chicken Pasta salad with grapes

This is my most favorite recipe that I have got off the internet. It is another complete meal in one, and can be doubled. 1 box suddenly salad -classic salad mix; 1/2 cup refrigerated poppy seed dressing; 1&1/2 cups cubed cooked chicken; 3/4 cup halved red seedless grapes; 1/2 cup thinly sliced celery. Empty pasta mix into 3 quart sauce pan 2/3 full of water. Boil gently 12 minutes, stir occasionally.Drain pasta, rinse with cold water, shake to drain well.In large bowl stir together the seasoning from box of salad mix, and poppy seed dressing add pasta and remaining ingredients, toss to combine. (Dried cherries may be used in place of the grapes.) Eat at once or refrigerate.