You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am looking for a flight from ATL to DFW, can you help me in booking?

ASSISTANT: Sure, Can you please share your trip dates?

USER: Sure, my planned travel dates are Oct 21 and Oct 23.

ASSISTANT: Do you have any connection limit?

USER: Please look for a connecting flight.

ASSISTANT: Is there any class preference?

USER: No, thank you.

ASSISTANT: Please forward your name.

USER: Myself David Miller.

ASSISTANT: Are there any other requirements?

USER: I would like to return my journey for the evening flight.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

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

ASSISTANT: Thank you for availing us.