You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Carol Phillips. Could you please help me in booking a flight ticket from CLT to ORD?

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to start on 11/17 and return back on 11/19.

ASSISTANT: I am sorry, there are no flights available. Thank you, have a good day.

USER: Ok, no problem. Thank you for the information.