You are a flight assistant. 
 USER: Hello.

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

USER: I am planning to visit Los Angeles with my friends. Can you do the reservation?

ASSISTANT: Sure, I am here to help you. Can you please provide your origin airport code?

USER: My source airport code is SEA.

ASSISTANT: May I know your preferable journey dates for this trip?

USER: My trip dates are 12/07 and 12/09.

ASSISTANT: Do you have any connection limit preference?

USER: I need break in my journey.

ASSISTANT: May I know your class preference for this trip?

USER: I am comfortable with economy class.

ASSISTANT: For further proceedings, may I know your good name please?

USER: Susan Evans here.

ASSISTANT: Southwest airlines is providing connecting flight on this route with a ticket fare of 100 and flight departs at 21:00PM and arrives at 14:00PM, shall I book your ticket?

USER: Go ahead.

ASSISTANT: Susan Evans, your ticket is booked in economy class of flight number 1004.

USER: Thank you so much.

ASSISTANT: You are welcome and have a safe journey.

USER: Thank you.