Hello.
Hello, how can I serve you today?
Can you please help me to change my existing reservation?
Sure, I'm always here to help you. Can you please provide your name?
My name is Sarah Wright.
 Please wait for a while, I will get back to you with the current status.
Sure.
I have gone through the reservation list which is recorded in database but, your name does not exist.
No problem, thank you for checking it.
Thank you for choosing us.