Hello.
user
Hello. How may I help you?
assistant
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
user
Yes, can you tell me your name?
assistant
I am Cynthia Carter.
user
Sorry to inform you that there is no reservation found on your name.
assistant
That's ok, thank you for checking.
user
Thank you for reaching us.
assistant