You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Jeffrey Clark. Owing to an emergency, I want to cancel my reservation. so please help me in the cancellation.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: Not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you.