Click on the cancellation link included in the initial confirmation email or the reminder email. You will receive a confirmation of your cancellation. If you've deleted the emails you can submit a ticket via Ask a Librarian, with all the information for your reservation (date, time, title, room number), and we can cancel it manually. 

If you've deleted the emails, you can submit a ticket via Ask a Librarian with all the information for your reservation (date, time, title, room number), and we can cancel it manually.