You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I need to change my recent reservation, can you please help me?

ASSISTANT: Sure, I will help you. Please let me know with your name.

USER: Myself Virginia Lee.

ASSISTANT: Please allow me a minute.

USER: Ok, I will be waiting.

ASSISTANT: Virginia Lee, I am really sorry to inform you that there is no reservation done on your name.

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

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