You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Brandon Hall. Owing to an emergency, I want to cancel my recent reservation.

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, sorry, no reservation found with provided name.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.