You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Due to my ill health, I would like to cancel my recent reservation to Dallas. Will you help me with this?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: May I know your name please for further process?

USER: My name is James Collins.

ASSISTANT: Please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry James, there is no reservation found as per your name to cancel it.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: You are welcome always.