You are having dinner with a client when she suddenly puts her hand to her throat. she cannot speak and her face is beginning to turn blue. what do you do?

Make a fist and place it just above the navel, thumb side in. Grab the fist with your other hand and push it inward and upward at the same time. Perform five of these abdominal thrusts. Repeat until the object is expelled and the person can breathe or cough on their own. (the Heimlich Menuver)