What is department name and office for the professor whose last name is Heffington?
SELECT T3.dept_name  ,  T2.prof_office FROM employee AS T1 JOIN professor AS T2 ON T1.emp_num  =  T2.emp_num JOIN department AS T3 ON T2.dept_code  =  T3.dept_code WHERE T1.emp_lname  =  'Heffington'
Heffington soyadı olan profesör için departman adı ve ofisi nedir?