You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Anthony Hall here. Find a flight ticket for me that is from DFW to MSP.

ASSISTANT: Sure, help me with your trip dates.

USER: My trip dates for my journey are 03/04 to 03/06. Ensure the price of the flight ticket is 500.

ASSISTANT: Sorry, there is no flight on your requested dates. Thank you for reaching us.