You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Brian Martin, want to cancel my recent reservation. Please help me out with that.

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

USER: Sure.

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

USER: It's ok, thank you for your help.

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