You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Brian Hill. I want to cancel my flight reservation as I am sick, can you please help me?

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

USER: Sure.

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

USER: No problem. Anyway, thank you for checking.

ASSISTANT: You are welcome. Thank you for reaching us. have a great day.