Find the name and date of events with expenses for pizza that were more than fifty dollars but less than a hundred dollars.
name of event refers to event_name; date of event refers to event_date; expenses for pizza refers to expense_description = 'Pizza' where cost > 50 and cost < 100
SELECT T1.event_name, T1.event_date FROM event AS T1 INNER JOIN budget AS T2 ON T1.event_id = T2.link_to_event INNER JOIN expense AS T3 ON T2.budget_id = T3.link_to_budget WHERE T3.expense_description = 'Pizza' AND T3.cost > 50 AND T3.cost < 100