You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I want to cancel my reservation as my plan to visit a the Central park got cancelled.

ASSISTANT: Sure, may I know your name?

USER: I am Nicholas Martinez.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to inform that there is no reservation found with your name.

USER: That's fine. Thanks for your response.

ASSISTANT: Thank you for opting us.