Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE appointment ( patient VARCHAR )
TABLE: CREATE TABLE patient ( ssn VARCHAR )

### Question ###
what are name and phone number of patients who had more than one appointment?

### Accurate SQL ###

SELECT name, phone FROM appointment AS T1 JOIN patient AS T2 ON T1.patient = T2.ssn GROUP BY T1.patient HAVING COUNT(*) > 1