Hello.
Hello. How may I support you at this moment?
Can you please help me to change my existing reservation?
Sure, I am here to  help you.
Thank you.
To check with your existing reservation status we need your good name please?
My name is Joseph Davis.
Ok, please wait for few minutes.
Sure.
There is no existing reservation found on your name in our records.
No problem, thank you.
Thank you for reaching us.