user: Question: How many Dates have a Builder of laconia car company, and a Number of 63-68?
Columns: ['Number', 'Builder', 'Type', 'Date', 'Length', 'Capacity']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['10', 'Laconia Car Company', 'baggage car', 1882.0, 'feet (m)', 'no seats']
SQL:

assistant: SELECT COUNT("Date") FROM "Table" WHERE "Builder" = 'laconia car company' AND "Number" = '63-68';