You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Nicholas Lee from Dallas. Can you please aid me in searching a flight? Because I have to attend a board meeting in Washington.

ASSISTANT: Sure, I am glad to help you in booking the flight ticket.

USER: Thank you.

ASSISTANT: May I know your airport codes?

USER: Ok, the airport which I prefer to travel are DFW and IAD.

ASSISTANT: Can you please provide your travel dates?

USER: The planned travel dates are 08/15 and 08/17.

ASSISTANT: Ok, please wait for a while.

USER: Ok, please make sure that the flight is with connection limit 1.

ASSISTANT: Thank you for waiting.

USER: It's ok.

ASSISTANT: As per your requirement there is a connecting flight is available and airfare is about 100.

USER: I am ok with this flight to travel, please proceed to confirm the flight ticket.

ASSISTANT: Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed for the flight 1011 in Southwest airlines.

USER: Thanks a lot for your assistance in booking my flight ticket.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.