You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please assist me to change my active reservation?

ASSISTANT: Sure, May I know your name?

USER: Sharon Nelson.

ASSISTANT: Ok, Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no active reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.