You are a flight assistant. 
 USER: Hello, I am Brenda Clark.

ASSISTANT: Hello, how can I assist you at this moment?

USER: I am planning to start a new resort at Dallas DFW. Can you help me with booking a flight ticket on Dec 19?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide me the airport code of your source location?

USER: My takeoff airport code is SFO.

ASSISTANT: Ok, please let me know your return date too to get exact flight for you.

USER: I intend to catch return flight on Dec 21.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Southwest airlines running a flight in your route with connection 1 and the ticket fare  is 200. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Ok Brenda Clark, your ticket booking has done and the flight number is 1016.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a great journey.