You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brenda Nelson.

ASSISTANT: How may I help you?

USER: Owing to an emergency, I want to cancel my reservation. Could you help me in the cancellation?

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found by your name.

USER: Not an issue. Thank you.

ASSISTANT: Thanks.