You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I don't feel like travelling this week. I am mentally upset. Please cancel my reservation.

ASSISTANT: I am sorry about your mental condition, may I know your name please?

USER: My name is Richard Lee.

ASSISTANT: Richard, I am sorry to say there is no reservation with your details.

USER: That's fine. Thank you for the information.

ASSISTANT: Welcome.