You are a flight assistant. 
 USER: Hello. I am Timothy Lewis.

ASSISTANT: Hello Timothy, how may I help you today?

USER: I have to reserve a flight ticket from Washington because I have to attend a function in Las Vegas. Can you please find a flight for me?

ASSISTANT: Sure, can you please share me with your dates of travel?

USER: Thank you for accepting my request. My travel dates are 12/24 and 12/26.

ASSISTANT: Ok, may I know your respective airports codes please?

USER: The source and destination airport codes are IAD and LAS respectively.

ASSISTANT: Please wait for a moment.

USER: Ok, I can wait for your response and make sure that the connection limit 1.

ASSISTANT: I found a flight with the fare of 100 and the airline is naming as UA as per your request, are you ok with this booking?

USER: Yes, I am ok with this flight. You can proceed to book the flight ticket.

ASSISTANT: Ok, your booking is done with the flight number 1022.

USER: Thank you for your assistance in booking a flight ticket.

ASSISTANT: You are welcome, have a safe flight.

USER: Most welcome.