You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,How may I help you?

USER: I have to attend to a Science exhibition, as the venue was changed to other place, I should move to that place.

ASSISTANT: May I know your good name please?

USER: Can you please change my existing reservation? I am Sharon Thompson.

ASSISTANT: Sure, please give me a minute I will check the details and let you know in a while.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, we did not found any previous reservation on your name.

USER: Ok, Thank you for your information.

ASSISTANT: Thank you for visiting us. Have a nice day.

USER: Sure.