You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Owing to an emergency I need to cancel my reservation, can you help me?

ASSISTANT: Sure, I will help you in this. Ok, may I know your name please?

USER: I am Brandon Robinson.

ASSISTANT: Please wait for a mean while to check for the availability.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Brandon, there is no reservation found on your name to cancel your reservation.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome always and have a great day.