You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I need to book a flight ticket from SFO to CLT, can you please help me for booking.

ASSISTANT: Sure, I will help you with that. Can you please share your preferable travel dates?

USER: I would like to travel on 01/14 to return on 01/16.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: May I know your name please?

USER: Steven Jackson here.

ASSISTANT: Sorry for the inconvenience, there are no flights found on this route as per your travel dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us, have a great day.