Police said a man walked into a business in the 11700 block of Sunset Hills Road, displayed a knife and demanded money. When the victim refused to give the suspect any money he ran away.
The victim did not require medical attention, police said.
The suspect was described as a white male, wearing a red hooded sweatshirt, black sweatpants and a mask.
Police did not name the business, but that location houses a 7-Eleven and two auto repair shops.