You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, I need to cancel my existing reservation. Can you help me with that?

ASSISTANT: Sure, may I know your good name please?

USER: Sure, my name is James Allen.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Ok, no worries at all.

ASSISTANT: Thank you for choosing us.

USER: Thank you.