You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Can you please help me in booking my flight from LAS to reach IAD?

ASSISTANT: How may I assist you? Sure, I will help you. Can I have your planned travel dates please?

USER: Thanks, my travelling dates are June 12th and June 14th.

ASSISTANT: May I know your name please?

USER: Myself Jonathan Williams.

ASSISTANT: Do you need a connecting flight?

USER: I prefer a single connecting flight.

ASSISTANT: May I know your other specifications?

USER: I don't have any more requirements.

ASSISTANT: I found an economy class in American Airlines with fare 200 and it is a connecting flight. Can I book your ticket?

USER: Please book it.

ASSISTANT: Ok, your booking is confirmed with flight number 1006.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us.