You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Could you please book a flight ticket from ORD to DFW?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: My journey dates are Mar 08 and Mar 10.

ASSISTANT: Is there any connection limit for you?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications?

USER: I want to return in the evening. And I prefer a normal cost airline.

ASSISTANT: Please help me with your name for booking.

USER: I am James Smith.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us.