You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to cancel my recent reservation because my trip dates are got postponed, can you help me?

ASSISTANT: Sure, please share your name to proceed with further.

USER: I am Patricia Davis.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We didn't find any reservation on your name to cancel.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.