You are a flight assistant. 
 USER: Hello, I am Carol Anderson.

ASSISTANT: Hello. How can I assist you the day?

USER: I want to attend my sister engagement in Oakland, Can you book a ticket with price 500?

ASSISTANT: Sure, I can book a ticket for you. Please update me your travel dates?

USER: My travel dates are 08/14 and 08/16.

ASSISTANT: Ok, mention your preferred airport codes?

USER: My source is Dallas & Fort Worth, TX - DFW. My destination code is CA - OAK.

ASSISTANT: Please wait a while, I will check and let you know the availability of flights.

USER: Sure.

ASSISTANT: As per your requirement, we found a Southwest airline flight matching your criteria. Shall I continue to booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with flight 1003 successfully.

USER: Thank you.

ASSISTANT: Thanks for availing our service, have a nice day.