What are names of patients who made an appointment?
SELECT name FROM appointment AS T1 JOIN patient AS T2 ON T1.patient  =  T2.ssn
SELECT name FROM appointment AS T1 JOIN patient AS T2 ON T1.patient  =  T2.ssn
[{'Name': 'John Smith'}, {'Name': 'Grace Ritchie'}, {'Name': 'John Smith'}, {'Name': 'Dennis Doe'}, {'Name': 'Dennis Doe'}, {'Name': 'Random J. Patient'}, {'Name': 'John Smith'}, {'Name': 'Dennis Doe'}, {'Name': 'Grace Ritchie'}]