Hello.
Hello. How may I assist you?
My business trip  dates are postponed, so I need to modify my travel dates, can you please change my ticket?
Sure, I can help you over that.
Thank you.
May I know your name for checking your status of reservation to change it?
My name is Dennis Collins.
Thanks for your name, there is no reservation found on your name Dennis Collins.
It's ok, thank you for checking.
Ok, thanks for approaching us.