You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you at this moment?

USER: I would like to meet my school principal on his birthday, can you please help me to book my flight ticket from DEN to SFO?

ASSISTANT: Sure, I can help you in booking flight ticket. May I know your airborne and recur travel dates that you have planned to move?

USER: Sure, I want to depart on 12/03 and return on 12/05.

ASSISTANT: May I know your name for further process?

USER: My name is Helen Turner.

ASSISTANT: Please wait a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: There is a flight available in this route as per your requested dates, airline is Southwest and connection limit of this airline is 1 with minimum fare of 200. Are you comfortable with this flight?

USER: That's fine for me, you can proceed for booking the ticket.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1007.

USER: Thank you so much for your help.

ASSISTANT: You are welcome Helen Turner.