check the reason immediately, and ask the customer to keep calm. After confirming that the power failure is not caused by emergency situations such as fire, take the initiative to light candles for the customer when troubleshooting, and say something relaxing to adjust the customer's mood, such as "candlelight dinner is more romantic". If it is really impossible to eliminate the fault in a short time, admit an apology, free of charge, and guide customers to evacuate safely and orderly.