Show flight number, origin, destination of all flights in the alphabetical order of the departure cities.
return flights ;return flight numbers of  #1 ;return origins of  #1 ;return destinations of  #1 ;return departure cities of  #1 ;return #2 ,  #3 ,   #4 ;return #6 sorted by #5 in alphabetical order
['select', 'project', 'project', 'project', 'project', 'union', 'sort']