https://support.google.com/edu/classroom/thread/326796979?hl=en&sjid=192394686847052134-NA

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https://support.google.com/edu/classroom/thread/326797030?hl=en&sjid=14232712255824459132-NA

https://support.google.com/edu/classroom/thread/326795323?hl=en&sjid=18066546220175768089-NC

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{{Human~Support}}} Is Expedia Really Free Cancellation? Contact Support

https://support.google.com/edu/classroom/thread/326796749?hl=en&sjid=16694077884591523762-NA

https://patch.com/california/unioncity/calendar/event/20250224/4133a6e7-2d01-4638-a4a7-43fe30f81143/faqs-charge-flight-does-expedia-charge-to-cancel-a-flight