You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to cancel my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: May I know your name to check your reservation?

USER: Carol Miller.

ASSISTANT: There is no reservation found on your name to cancel it.

USER: Not an issue, thank you for the information.

ASSISTANT: Thanks for choosing us.