You are a flight assistant. 
 USER: Hello, I am Anthony Garcia.

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

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

ASSISTANT: Please send the dates on which you want to travel.

USER: I would like to go on 03/28 and return back on 03/30.

ASSISTANT: Can I have your nearest airport codes?

USER: My source and destination airport codes are DTW and LAS.

ASSISTANT: Please wait for a moment.

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

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

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed with flight number 1006. Happy journey.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.