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

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

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

ASSISTANT: Definitely. Please share your journey dates.

USER: I would like to go on 03/20 and return back on 03/22.

ASSISTANT: May I know your airport codes?

USER: My source and destination airport codes are DEN and DFW.

ASSISTANT: Please wait for a moment.

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

ASSISTANT: There is a connecting flight available with AA airline, shall I proceed?

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

ASSISTANT: Your booking is done with flight number 1012. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.