You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency I have request you to cancel my reservation. Can you please help me out with that?

ASSISTANT: Sure, may I know your name?

USER: Thank you for accepting my request, I have reserved on the name of Samantha Miller.

ASSISTANT: No reservation found on your name.

USER: Oh! I think it might be cancelled by my cousin. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.