You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I want to book a ticket from DFW to CLT, could you please make a reservation?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are on Sept 10 and Sept 12.

ASSISTANT: Can I know your name please?

USER: My name is Joshua Brown.

ASSISTANT: Do you need any specifications?

USER: I need only single connecting flight.

ASSISTANT: Sorry, there are no flights found.

USER: Ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.