You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Due to my ill health, I couldn't make my trip to Dallas. Can you please cancel my recent reservation?

ASSISTANT: Sure, I will help you. May I know your good name please?

USER: My previous reservation has done with my name Brandon Edwards.

ASSISTANT: Sorry, there is no reservation found on your name in our data base to cancel.

USER: Ok, not an issue. May be my brother has cancelled my ticket on behalf of me.

ASSISTANT: Thank you for approaching us.

USER: Thank you for providing information.