Hello.
Hello. How can I  help you?
I have planned to attend a meeting but suddenly I got a call that the meeting has postponed to some other dates, so can you please modify my previous flight ticket booking?
Sure, may I know your name please?
Thank you for your positive response and my name is Jason Mitchell.
I am sorry no reservation found on your name.
No issues with that one, thank you for your information. Welcome.
Thank you for choosing us.