What is the fine-grained topic of the following text: The Food Retail & Hospitality Expo, which is being held on September 5th at the Citywest Exhibition Centre, Dublin, will highlight the key trends and challenges facing food retailers, food service operators and hospitality providers while also showcasing the latest innovations, developments in best practice and new technological solutions available. Only return the topic.
Food Retail & Hospitality Expo at Citywest Exhibition Centre, Dublin