You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to cancel my reservation, help in that?

ASSISTANT: Sure, let us know your name for checking your reservation status in our database.

USER: Donna Evans here.

ASSISTANT: Evans, please hold on for a while. I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry Evans, I have not found any reservation by your name in our database.

USER: That's ok, might be my elder brother has cancelled.

ASSISTANT: Thank you for contacting us and have a nice day.

USER: Thanks for your help.