You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: I want to visit White House in Washington DC- IAD, can you please book my flight ticket?

ASSISTANT: Sure, may I know your source airport?

USER: My origin code is DFW.

ASSISTANT: When do you planned your journey dates?

USER: My trip dates are 12/06 and my return date is 12/08.

ASSISTANT: Do you need any halt in between journey?

USER: I need halt in between my journey.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to notify that there is no flight found on your journey dates.

USER: ok, fine thank you your information.

ASSISTANT: May I know your good name please?

USER: Myself Angela Taylor.

ASSISTANT: Thanks for connecting us.