You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: May I know your name please for further process?

USER: I am Virginia Martin.

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

USER: No problem, thank you for the information.

ASSISTANT: You are welcome.