What is the fine-grained topic of the following text: Delhi Institute of Hotel Management and Catering Technology (DIHM), established in 1983, has been training future hospitality professionals and catering to the up surging demands in various fields, namely, hotels, travel and tourism, aviation, hospitals, restaurant and bars, fast food joints etc. Only return the topic.
Delhi Institute of Hotel Management and Catering Technology (DIHM) and its contributions to training hospitality professionals.