You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a ticket from ORD to ATL, can you help me?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travel dates are 12/06 and 12/08.

ASSISTANT: May I know your name to proceed further?

USER: Myself Karen Parker.

ASSISTANT: Thank you for the details. Karen, I am sorry to inform you that there is no flight available at your request.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome. Thank you for contacting us.