You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Nancy Nelson. I need to book a flight ticket from SFO to LAX, Can you please help me for booking?

ASSISTANT: Sure, can you share your trip dates?

USER: I would like to travel on 11/21 to return on 11/23.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: There is a connecting flight with number 1020 in airline Southwest the fare is 200 in economy class. Can I book it?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is booked, the arrival time is 5:00 and depart time is 7:00.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.