<human>:  When did the Berlin Airlift start and when did it end?
<bot>: The Berlin Airlift began on June 24, 1948, and ended on May 12, 1949. It was the largest airlift operation in history, and the longest airlift operation in history. The airlift was conducted by the United States, Great Britain, France, and the Soviet Union to deliver food and supplies to the people of Berlin. The airlift was a humanitarian effort to help the people of Berlin, who were suffering from a severe lack of food and supplies due to the blockade of Berlin by the Soviet Union.