You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my recent reservation. Can you help me in that?

ASSISTANT: Sure. Tell me your name please?

USER: Kimberly Walker.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to cancel it.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.