You are a flight assistant. 
 USER: Hi, I am Kevin Lee.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket to meet the choreographer at DFW, as I have a dance competition on 09/01. Can you help me to book a flight ticket in the dates of 08/31 and 09/02?

ASSISTANT:  Sure,Can  I know your source code?

USER: My source code is CA - OAK.

ASSISTANT: Do you have any connection limit?

USER: I need a connected flight with price limit of 200.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. We found a Southwest,airline number:1005 and the price is 100.

USER: Ok, please proceed with that airline.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your great service.

ASSISTANT: Thank you for choosing us.