<human>:  When did the Berlin Airlift start and when did it end?
<bot>: The Berlin Airlift started on June 24, 1948 and ended on May 12, 1949. It was a massive humanitarian effort by the United States and the United Kingdom to deliver food and supplies to West Berlin, which was under blockade by the Soviet Union. The blockade was in response to the creation of the Berlin Wall, which divided the city into two parts.