International Diploma Course in Restaurant Services – Looking for the best HM college for international diploma course in restaurant services? Want to join a short-term diploma course within small fee structure and a bright future career. Then congratulations, Hayes Institute of Hotel Management is offering the best HM diploma courses for you. We are here to deliver the best knowledge and culinary skills to our students. So if you want to join us for an international diploma course in hotel and restaurant services, you can surely go for it.