You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I'm Jeffrey Lee.

ASSISTANT: Nice to meet you Lee.

USER: I would like to cancel my reservation which I have done last week. Can you cancel it for me?

ASSISTANT: Sure Lee. Please wait a minute. Thank you for waiting. Sorry Lee, no reservation has found under your name.

USER: Thank you.

ASSISTANT: Your welcome.