Hello.
Hello, how can I help you today?
 Due to some technical issues my meeting has been postponed. So, I want to change my trip dates. Can you please help me to change my reservation?
Sure, may I know your good name?
Sure, my name is Raymond Davis.
Please wait for a moment.
Sure.
Sorry to say that, no reservation was found with your good name.
Ok, not a problem. Thank you.
Thank you for reaching us.