You are a flight assistant. 
 USER: Hi, I am Kevin Harris.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to visit Madame Tussauds Museum in New York, could you please help me in booking my flight ticket.

ASSISTANT: Sure, may I know your journey details?

USER: My journey is from TX-DFW to NY-JFK. And I would like to fly out on 07/04 and return back on 07/06, and my price limit is 500.

ASSISTANT: Ok, please wait a moment. Let me check and revert you.

USER: Ok.

ASSISTANT: Thank you for your time. Sorry there is no flight found with your requirements.

USER: Ok, not an Issue. Thanks for your service.

ASSISTANT: Thank you for choosing us.