You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you today?

USER: Owing to an emergency, my live concert in New York got cancelled. So I want you to cancel my existing reservation.

ASSISTANT: Can I have your name please?

USER: Sure, Brenda Gonzalez.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your assistance.