Well there are several ways to attract customers. Some cost a little money and some just take your time in networking and P/R. First you want to create a brand and market yourself as that brand. Most brands in the catering/hospitality business are driven by the customer service philosophy and a few specialty items or services. Participate in community/charity events, galas and chamber type functions. Take samples of your signature dishes to the different offices in your area. Call some of the bigger plants and offer to bring them a sample luncheon to the people that order the lunches for different meetings they have. Network with some of the tourist attractions and museums that offer venues for parties and receptions. Network with the managers of the different venues that specialize in renting their facilities for hospitality events. Network with the florist, bakeries, photographers,  and anyone else in the hospitality industries. Build yourself a network and the customers will follow.