You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carol Miller.

ASSISTANT: How can I assist you today?

USER: As my brother met with an accident, so I could not reach my destination. So I want to cancel my reservation, can you help me?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok.

ASSISTANT: Carol, there is no reservation found under your name.

USER: No issue, thank you for checking.

ASSISTANT: You are welcome. Thank you for reaching us.