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

QUERY:
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'