Hello.
Hello, how may I help you for this moment?
I am Benjamin Carter. I am planning to change my recent reservation, can you please help me out?
Sure Carter, I am here to help you.
Thank you.
Please wait for a mean while.
Sure, I will wait.
Sorry Carter, there is no reservation found as per your name to change your reservation.
That's fine. Thank you for your help.
You are welcome always.