You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am Steven Turner. Can you please help me in changing my recent reservation?

ASSISTANT: Sure. Please wait for a while.

USER: Ok, sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for opting us.