You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Richard Lopez here.

ASSISTANT: Lopez, how can I aid you?

USER: I have book a ticket to watch a cricket match, but it was cancelled. Can you help me in cancelling my reservation? Please.

ASSISTANT: Sure, let me check your details.

USER: Ok.

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

USER: That is fine. Thank you.

ASSISTANT: You are welcome.