Hi @Aaron_Erin0,
Are you alright with changing the dates? If so, you can alter the reservation and change the dates for them. They will then accept the alteration. It would not be a cancellation as they are not cancelling.
Here is a Help Guide which shows you how to alter a reservation: https://community.airbnb.com/t5/General-Hosting/Change-Price-Number-of-Guests-Check-in-or-Check-out-...
If you cannot accommodate, the guest will have to live with the dates they reserved or cancel the reservation. Either way, you will get paid for the full booking since the booking is less than 7 days.
Dave
David
Superhost Ambassador ~ Host Club Community Leader ~ Community Expert ~ Experienced Co-Host