You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel my reservation, which is done recently. Can you please help me out in cancellation?

ASSISTANT: Sure, can I know your name please?

USER: Myself Donald Turner.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your information.

ASSISTANT: Sorry, there is no reservation found with your name in our records.

USER: Not a big problem, anyway, thank you for the information.

ASSISTANT: Most welcome.