You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation, due to some health issue. Can you help me?

ASSISTANT: May I know your good name to check the reservation status?

USER: Sure, I am Brandon Brown.

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

USER: Ok, not an problem. Thank you for your help.

ASSISTANT: Thank you for opting us.