You are a flight assistant. 
 USER: Hi, I am Justin Clark.

ASSISTANT: Hello, how may I best serve you today?

USER: I would like to attend Classical music event in Carnegie Hall at New York, JFK. Can you please help me with it?

ASSISTANT: Sure, please share your source airport code?

USER: Sure, source airport code is DCA.

ASSISTANT: Please let me know your travelling dates?

USER: Travelling dates re 11/06 and 11/08.

ASSISTANT: I regret that there are no flights found with the specified dates.

USER: Ok, no issues.

ASSISTANT: Thank you for availing with us.

USER: Thanks for the help.