You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my recent reservation due to sudden postpone of my football match.

ASSISTANT: Sure, please wait a moment.

USER: Can you help me in doing that?

ASSISTANT: Sure, may I know your name?

USER: I am Nicholas Clark.

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

USER: No problem. Thank you.

ASSISTANT: Thank you.