You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you now?

USER: Please change my reservation, which is reserved earlier in the name of Sharon Jones.

ASSISTANT: Ok, no problem. I will change. Please wait.

USER: Sure.

ASSISTANT: May I know your name?

USER: Sharon Jones.

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

USER: Ok, no problem at all. Thanks for your help.

ASSISTANT: Thanks for consulting us.