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