Restaurants count on servers to provide exceptional customer service regardless of the situation. Interviewers will be looking for candidates who are skilled in communicating, multitasking, and maintaining a friendly attitude under pressure. Make sure to be familiar with the restaurant's menu items, understand standard restaurant operations, and know how to respond to an unsatisfied customer.
What would you do with an unhappy customer?
I would try to fix the situation as best as possible and if I couldn't I would get a manager involved.