https://pressbooks.pub/test3456/chapter/how-do-i-ask-a-question-at-expedia-expedia-customer-service-english/
https://support.google.com/edu/classroom/threads?hl=en&thread_filter=%28detail%3Auser_role%3Aother%29&sjid=13348982782422561113-NC
https://pressbooks.pub/test3456/chapter/how-do-i-complain-to-expedia-expedia-customer-service-english/