You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my reservation due to terrorist attacks in New York, can you please help me?

ASSISTANT: Ok, may I know your good name please for further processing?

USER: Sure, my name of previous reservation was Joseph Evans.

ASSISTANT: Please wait for a mean while.

USER: Ok, take your own time.

ASSISTANT: Sorry Evans, there is no reservation found as per your name to cancel your reservation.

USER: Ok, no problem with it. Thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.