You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Turner.

ASSISTANT: Sharon Turner, how may I assist you today?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, I will help you. Please allow me a minute.

USER: Ok.

ASSISTANT:  Sharon Turner, I regret to inform you that there are is no booking done on your name.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us. Have a great time.