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Does this bus go to the airport?
Could you make a booking in advance?
I think the tickets sold out.
I think the slots are all booked.
I'm waiting for a package.
I think it requires a reservation.
Why not try booking ahead?
It looks like the tickets sold out.
It looks like the slots are all booked.
Unfortunately, I couldn't book it.
It looks like it requires a reservation.
I should have made a reservation.