Hello.
Hello. How may I guide you today?
I want to change my existing reservation due to sudden postpone of  client meeting. Can you help me in doing that?
Sure, I will help you with that.
Thank you.
Can I know your name to check your previous reservation?
I am Anthony Collins.
Please wait a moment to check.
Sure.
We regret to inform you that there is no reservation found on your name in our records.
Ok, no issues. Thank you.
Thank you for reaching us, have a great day.