user: Question: Name the pennant number for completion of 30 October 1934 and launched 29 March 1934
Columns: ['Ship', 'Pennant number', 'Laid down', 'Launched', 'Completed']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Echo', 'H.23', '20 March 1933', '16 February 1934', '22 October 1934']
SQL:

assistant: SELECT "Pennant number" FROM "Table" WHERE "Launched" = '29 March 1934' AND "Completed" = '30 October 1934';