You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Dorothy Nelson.

ASSISTANT: How may I aid you?

USER: I want to cancel my recent reservation, can you help me in that?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you for accepting my request.

ASSISTANT: Dorothy Nelson, We haven't found any reservation under your name in our database.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.