用一段英文描述疫情下的奉献的真实冷门事例（提及姓名）

John Smith is a real-life hero during the pandemic. He is an essential worker who works in a grocery store, stocking shelves and helping customers. Despite the risks of working in close contact with others, John continues to show up every day and do his job with a smile on his face. He even goes above and beyond by helping elderly customers carry their groceries to their cars and offering words of encouragement whenever he can. His dedication to serving others during this difficult time has not gone unnoticed, inspiring many people in his community.