You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Nicholas Nelson.

ASSISTANT: Glad to meet you Nelson.

USER: Owing an emergency, I want to cancel my reservation. Can you help me for that?

ASSISTANT: Sure, hold on for a moment. Let me check. I found a reservation on your given name. Shall I proceed to cancel?

USER: Please proceed to cancel.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you your help.

ASSISTANT: Welcome.