You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you today?

USER: I am John Brown. As I have fallen sick, due to bad weather I would like to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you choosing us.