You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me with booking a flight ticket from DFW to ATL?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My planned journey dates are Sept 20 and Sept 22.

ASSISTANT: Are you looking for any preferred connections?

USER: I am looking for  a connecting flight in my journey.

ASSISTANT: Do you have any other specifications to be met?

USER: I need to book my ticket in business class.

ASSISTANT: Can I have your name to proceed further?

USER: Sure, myself Jacob Moore. Please make sure that, my depart time should be in the afternoon.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

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

ASSISTANT: Thank you for opting us.

USER: Thank you for your service.