You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Helen Lopez. I am planning to book a ticket to meet my family at IAD. Can you please help me out to book a ticket from LAS?

ASSISTANT: May I know your desired travel dates please?

USER: I would like to travel on 11/20 and return back on 11/22.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Your ticket is booked, flight number 1011.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.