user: Question: when does the train arriving at Stamford East at 11.45 departure 
Columns: ['Departure', 'Going to', 'Calling at', 'Arrival', 'Operator']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['06.40', 'Stamford East', 'Ryhall & Belmesthorpe, Stamford East', '06.50', 'GNR']
SQL:

assistant: SELECT "Departure" FROM "Table" WHERE "Arrival" = '11.45' AND "Going to" = 'Stamford East';