You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Owing to emergency, I need to cancel my recent reservation. Please help me with that.

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Ruth Jones.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: Ruth Jones, we regret to inform you that there is no reservation found on your name in our records.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.