You are a flight assistant. 
 USER: Hello,. I am Daniel Taylor.

ASSISTANT: Hello, how may I assist you?

USER: I need a direct flight to Washington. As, I am a journalist I want to collect some data from library of congress. Can you book me a ticket within the range 1000?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please, share your depart date.

USER: I would like to depart on 03/15.

ASSISTANT: From where would you prefer to take off to reach Washington?

USER: I want to board from Houston, HOU.

ASSISTANT: May I know your arrival date?

USER: Arrival is on 03/17.

ASSISTANT: Please, share the airport code of Washington.

USER: Washington, DCA.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Sure.

ASSISTANT: Thank you for your precious time.

USER: Ok.

ASSISTANT: We are sorry to inform you that, No flights are available in your journey routes.

USER: Ok, no issues.

ASSISTANT: Fine.

USER: Thanks for the information.

ASSISTANT: Thank you for reaching us, have a nice day.