You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Please help me out in booking the ticket from CLT to DFW.

ASSISTANT: Sure, can you please provide me your planned travel dates?

USER: My trip dates will be Mar 22 to Mar 24.

ASSISTANT: May I know your connection limit?

USER: I need a connected flight.

ASSISTANT: Is there any class preference for you?

USER: Business is my class preference.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Nicholas Walker is my name.

ASSISTANT: Please wait for a moment. I will check the availability of the flights.

USER: Ok.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.