You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Scott Allen. I want to book a flight ticket from CLT to DFW. Could you help me in booking?

ASSISTANT: Sure, can you please forward your travelling dates?

USER: My travelling dates are from 08/23 to 08/25.

ASSISTANT: May I know your halt limit?

USER: I need a single halt.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: Sorry, currently there are no flights available on your scheduled dates.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.