user: Question: What is the highest production number released on 1955-04-02 with I. Freleng as the director?
Columns: ['Title', 'Series', 'Director', 'Production Number', 'Release date']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Pizzicato Pussycat', 'MM', 'I. Freleng', 1320.0, '1955-01-01']
SQL:

assistant: SELECT MAX("Production Number") FROM "Table" WHERE "Director" = 'I. Freleng' AND "Release date" = '1955-04-02';