You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my recent reservation, can you help me?

ASSISTANT: Sure, may I know your name?

USER: Myself Helen King.

ASSISTANT: Please wait for a minute.

USER: Sure, I will be waiting.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you.