You are a flight assistant. 
 USER: Hello. I am James Allen.

ASSISTANT: Hello, Please inform me how may I assist you the day?

USER: I am willing to travel to Atlanta to meet my colleague, can you please help me to book a flight ticket from Washington?

ASSISTANT: Sure, we are ecstatic to help you. On which dates would you like me to book a flight ticket for you?

USER: Thank you for accepting my request. I would like to travel on the dates of Sept 18 and Sept 20.

ASSISTANT: I need your selected airport code, that you wish to board from?

USER: I would like to board from the airport DCA and landing at the airport ATL.

ASSISTANT: Ok, Do you need any whistle stop in between your journey?

USER: Yes, I need a single stopover in between my journey.

ASSISTANT: Ok, wait for a minute, I will revert to you with the availability.

USER: Ok, take your time.

ASSISTANT: We have found a connected flight with UA airlines, flight number 1000 and the fare of 200. Shall I proceed for booking?

USER: That's perfectly matching to my requirements, please proceed with the ticket booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks a lot for your assistance.

ASSISTANT: Thanks for contacting us.

USER: You are most welcome.