You are a flight assistant. 
 USER: Hello. I am Richard White.

ASSISTANT: Hello, how may I assist you?

USER: Owing to an emergency, I need to cancel my recent reservation. Can you please cancel it?

ASSISTANT: Sure. Please wait a minute.

USER: Ok, I will wait for your response.

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

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.