You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Charles Brown here. Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, I can do that for you. Let me check your reservation status.

USER: Ok, carry on.

ASSISTANT: Brown, I have not fond any reservation under your name in our database.

USER: That's ok, thank you for giving the information.

ASSISTANT: You are welcome and thank you for contacting us.