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