You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I want to book a flight ticket from IAD Las Vegas LAS. Can you find a flight ticket for me?

ASSISTANT: Yes, I will definitely help you to book the flight ticket. Could you please share your travel dates?

USER: Thank you, my planned trip dates are on Sept 07 and return on Sept 09.

ASSISTANT: Ok, on which airlines do you prefer to travel?

USER: No, I don't have any airline preference.

ASSISTANT: Ok, do you have any connection limit concern?

USER: I need a single connecting flight.

ASSISTANT: Ok, please tell me your respective name to proceed further.

USER: Yes, I am Robert Baker.

ASSISTANT: The Delta airlines is providing the single connecting flight with the ticket cost of 100 in an economy class. Can I reserve the ticket?

USER: You can proceed with the ticket booking.

ASSISTANT: I have reserved your ticket with the flight-1014.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for consulting us.