You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, may I know your name?

USER: Sure, I am David Wilson.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.