The hotel refused to believe it.

Thank you very much for your reply. Sorry to interrupt. I booked two rooms in your hotel yesterday through hours. But because of our new schedule, we have to cancel the order. Although we have sent your email to them, the personnel department said that if we want to cancel the order, we must get your consent before we can cancel the order. I know this is a waste of time for you, and I'm sorry to keep bothering you. But can you make it clear by email that you agree to cancel the order so that we can show it to the personnel department?

I really appreciate your help.

Best regards,

.....

My friend, don't repeat English like Chinese. Oh, a lot of your original English can be omitted, but there are also many places that need to be supplemented in English. Just express your meaning. There are many mistakes in English on the first floor, which needs to be improved!