You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me in booking a flight ticket from ATL to JFK?

ASSISTANT: Sure, I am gleeful to help you with that. May I know your travelling dates, please?

USER: I would like to fly on Feb 01 and return on Feb 03.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: I would like to prefer normal cost airline.

ASSISTANT: May I know your name please?

USER: Myself Susan Lewis.

ASSISTANT: Sorry to say that, there are no flights found on this route as per your travel dates.

USER: Not an issue. Thank you.

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