You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me to book a flight ticket from ATL to SFO?

ASSISTANT: May I know your travelling dates?

USER: My travel dates are Feb 19 and Feb 21.

ASSISTANT: Can I know your connection limit please?

USER: I prefer direct flight for this trip.

ASSISTANT: Do you have any other preference?

USER: No, thanks for asking.

ASSISTANT: May I know your name please?

USER: I am Nicole Hernandez.

ASSISTANT: As per your requirements. There is a connecting flight with ticket fare 200 and 1003 as flight number in Southwest Airline. Shall I proceed with booking?

USER: Can you check it once direct flight?

ASSISTANT: Sorry, no direct flights available on your route.

USER: No problem, thank you for the information.

ASSISTANT: Most welcome.