Casual dining refers to a type of restaurant that provides a relaxed, comfortable atmosphere where customers can enjoy a sit-down meal without the formality of fine dining. These restaurants typically offer a diverse menu with a range of dishes, including appetizers, main courses, and desserts, often at moderate prices. Service is usually friendly and attentive, but not overly formal. Think of places where you can enjoy a nice meal with family or friends in a welcoming, laid-back environment. Examples include popular chains like Applebee's, Chili's, and Olive Garden.