You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my recent reservation. Could you help me?

ASSISTANT: Sure, may I know your name?

USER: Susan Clark.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: We found your recent reservation and successfully cancelled.

USER: Thank you.

ASSISTANT: Thank you for reaching our service.