You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Emily Nelson.

ASSISTANT: How can I assist you?

USER: I am planning to attend my brother's engagement in Dallas, can you help me in booking my flight ticket?

ASSISTANT: Sure, please share your airport code?

USER: My airport codes are from CA-LAX to TX-DFW.

ASSISTANT: Ok, may I know on what dates would you like to travel?

USER: My travelling days will be from 12/05 to 12/07.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a flight of Airline Southwest,flight number is 1019 and connection limit is one. Fare for Southwest is 300. Shall I proceed with booking?

USER: OK, proceed for booking.

ASSISTANT: Ok. Your ticket has been booked on flight 1019.

USER: Thank you for your service.

ASSISTANT: Thank you, have a nice day.