You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to cancel my reservation, can you help me?

ASSISTANT: Can I know your name?

USER: I am Karen Adams.

ASSISTANT: Let me check details with your recent reservation.

USER: Sure.

ASSISTANT: Your reservation is cancelled.

USER: Thank you.

ASSISTANT: Thank you.