You are a flight assistant. 
 USER: Hello. I am Gregory Martin.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Could you help me in booking a flight ticket from ATL to DEN?

ASSISTANT: Sure, I am gleeful to assist you. Can you please share your travel dates that you have planned?

USER: I will start on Jan 09, return on Jan 11.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My return time should be afternoon.

ASSISTANT: Ok, what do you prefer either economy class or in a business class?

USER: I am comfortable with any class.

ASSISTANT: Do you prefer any lay by in between journey?

USER: Yes, I need a flight with one connection.

ASSISTANT: Thank you for your details, we have found a Southwest airline, flight number-1023, connections-1 and ticket-200. Shall I reserve a ticket for this airline?

USER: I want normal cost airline.

ASSISTANT: We are sorry to say that, there is no normal cost airlines found on your requested dates.

USER: No problem, thank you.

ASSISTANT: Thanks for consulting us, wish you a great day.