Hello.
Hello. How can I assist you at this moment?
I would like to change my flight reservation as my trip got postponed, can you please help me?
Sure, I am happy to help you with that.
Thank you.
Can I have your good name please to check your reservation status?
I am Ruth Hall.
Ok, please wait a moment.
Sure.
Sorry Ruth Hall, no reservation  has found under your name to change.
That's ok, thank you for checking.
Thank you for choosing us, have a good day.