You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Karen Davis here.

ASSISTANT: How can I help you?

USER: Can you cancel my flight ticket reservation? As my wedding date have been postponed in which was to be held in a church in New York.

ASSISTANT: Just a moment please.

USER: Ok.

ASSISTANT: I am sorry no flights found on your name.

USER: Ok, not a problem.

ASSISTANT: Thank you for choosing.

USER: Thank you.