Hi.
Hello, how may I serve you today?
Can you please help me to modify my existing reservation?
Sure, I am here to help you with this.
Thank you.
May I know your name please?
I am Dorothy Clark.
Ok, wait for a mean while please.
Sure, take your time.
Sorry to say, that there is no active reservation found as per your name to modify it.
That's ok, thank you for checking.
You are welcome.