How do you say booking is confirmed?
How do you say booking is confirmed? Your booking is confirmed, and we'll see you on [booking date]! Thank you for booking [name of activity] with us on [location]. You'll find details of your reservation and payment details enclosed below. If you need to get in touch, you can email or phone us directly.
Can you confirm or could you confirm?
As you're in the process of confirming or verifying something, the word can applies. If you were describing how you had asked someone to confirm or verify something in the past, the the word could would apply.