SCHEMA:
CREATE TABLE ship (lost_in_battle VARCHAR, name VARCHAR); CREATE TABLE battle (name VARCHAR, date VARCHAR, id VARCHAR)
User Question:
List the name and date the battle that has lost the ship named 'Lettice' and the ship named 'HMS Atalanta'


SELECT T1.name, T1.date FROM battle AS T1 JOIN ship AS T2 ON T1.id = T2.lost_in_battle WHERE T2.name = 'Lettice' INTERSECT SELECT T1.name, T1.date FROM battle AS T1 JOIN ship AS T2 ON T1.id = T2.lost_in_battle WHERE T2.name = 'HMS Atalanta'