You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am trying to cancel the existing reservation because the trip got cancelled suddenly. Can you please help me to do that?

ASSISTANT: Sure, I can help you.

USER: Thank you for considering my request.

ASSISTANT: May I know your name?

USER: My name is Stephanie Hill.

ASSISTANT: Give me a minute.

USER: Ok, take your time.

ASSISTANT: Thanks for being waiting, We found a  reservation by this name and it has been cancelled successfully.

USER: Thanks a lot for your help.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.