You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am willing to book a flight ticket from SFO to IAD. Can you please help me?

ASSISTANT: Sure, could you please share me with your dates of journey?

USER: Thank you, my preferred dates of journey are 11/21 and 11/23.

ASSISTANT: There is a flight with the connecting flight of fare 200 and the airline is naming as UA, are you ok with this ticket?

USER: Ok, please book the ticket with name Benjamin Evans.

ASSISTANT: Your ticket has been reserved with the flight number 1006.

USER: Thank you for helping me in ticket booking.

ASSISTANT: You are welcome and have a happy journey.