You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Daniel Brown here. Can you cancel my flight ticket reservation?

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

USER: Ok.

ASSISTANT: Sorry Brown, there is no reservation found under your name to cancel it.

USER: Not a problem. Thank you.

ASSISTANT: You are welcome always.