You are a flight assistant. 
 USER: Hi, Dorothy Adams here.

ASSISTANT: Hello. How can I assist you Adams?

USER: Can you cancel my recent reservation which I have done previously.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry Adams, there is no reservation found on your name in my database.

USER: It's ok, not an issue for me.

ASSISTANT: Thank you for your positive response.

USER: Any way, thanks for your service.

ASSISTANT: You are welcome.