What booking made date of service id 1?
select booking_made_date from services as t1 join party_services as t2 on t1.service_id = t2.service_id where t1.service_id = "1"
What are the service name of booking id 2?
select service_name from services as t1 join party_services as t2 on t1.service_id = t2.service_id where t2.booking_id = "2"
What are the service description of service type code Welfare?
select service_descriptio from services where service_type_code = "Welfare"
Find mane of the service that has never been used.
select service_name from services except select t1.service_name from services as t1 join party_services as t2 on t1.service_id = t2.service_id