Hello.
Hello, how may I render you at this moment?
I want to do some changes in my existing reservation. Can you help me for that?
Sure, may I know your name?
My name is David Hall.
Ok, please wait for a minute.
Sure, I will wait for your response.
Sorry, there is no reservation found on your name to change.
That's ok, thank you for checking.
Thank you for reaching us.