You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Daniel Smith.

ASSISTANT: How may I assist you today?

USER: I want to book a flight ticket to attend International Conferences about Religious Festivals in New York, NY - JFK.

ASSISTANT: Sure, please share your travelling dates?

USER: Can you please help me in booking a flight ticket with price of 500? Sure, 08/09 - 08/11 are my travel dates.

ASSISTANT: Sure. Ok, share your source airport code?

USER: My origin is from Washington, DC - DCA.

ASSISTANT: There are no flights found on your requested dates.

USER: Thank you.

ASSISTANT: Thank you for approaching us.