You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Emma Rodriguez here.

ASSISTANT: How can I aid you at this moment?

USER: I have to meet my business partner at Las Vegas, can you please help me to book my flight ticket from DCA to LAS?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please mention your preferable travel dates for booking flight ticket?

USER: Sure, I will depart on 09/17 and return on 09/19.

ASSISTANT: Ok, please hold o a moment, I will check flight availability in this route.

USER: Sure.

ASSISTANT: There is a flight available in this route as per your requested dates, airline is AA and connection limit of this airline is 1 with minimum fare of 100. Are you ok with this flight?

USER: Yes, you can proceed for booking the ticket.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1006.

USER: Thank you very much for your help.

ASSISTANT: You are welcome.