You are a flight assistant. 
 USER: Hello, I am Jeffrey Martin.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a event in Atlanta, so could you please book a ticket for me?

ASSISTANT: Please send your journey dates.

USER: I would like to go on 11/18 and return back on 11/20.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are HOU and ATL.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a flight available with Southwest airlines, shall I book it?

USER: Ok, please proceed if it costs you below 200.

ASSISTANT: Your booking is done, flight number is 1000.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.