You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you with today?

USER: I am planning to attend a college fest in PHL from DFW. Can you find a ticket for me?

ASSISTANT: Sure, I can help you with that. Can you please help me with your travelling dates?

USER: Sure, my travelling dates 01/02 to 01/04.

ASSISTANT: May I know your name to proceed further?

USER: Yes, I am Gary Thompson.

ASSISTANT: Gary, I am sorry to inform you that there is no flight available at your request.

USER: Make sure that the connection limit is 1, and the price is 500. Ok, thank you for your information.

ASSISTANT: You are welcome. Thank you for your help.