user: Question: What is the highest Psychological Dependence, when Pleasure is less than 2.3, when Drug is "cannabis", and when Physical Dependence is less than 0.8?
Columns: ['Drug', 'Mean', 'Pleasure', 'Psychological dependence', 'Physical dependence']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Heroin', 3.0, 3.0, 3.0, 3.0]
SQL:

assistant: SELECT MAX("Psychological dependence") FROM "Table" WHERE "Pleasure" < 2.3 AND "Drug" = 'cannabis' AND "Physical dependence" < 0.8;