You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I have planned to attend National Gallery of Arts at Washington, DCA. Can you book a ticket with price 500?

ASSISTANT: Sure, I will help you. When are you planning to travel?

USER: My planned dates are 01/07 and 01/09.

ASSISTANT: Please provide your origin airport code.

USER: My source airport code is Washington, DC - IAD.

ASSISTANT: May I know your name?

USER: Sure, I am Pamela Wilson.

ASSISTANT: We found a direct flight with your journey dates. Are you ok with this flight?

USER: No, I need a connection.

ASSISTANT: OK.

USER: Thank you for providing information.

ASSISTANT: Thank you for choosing us.