You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I have a plan to celebrate the food festival in ORD, can you please assist me in booking a flight ticket from PHL?

ASSISTANT: May I know your trip dates?

USER: My trip dates are May 28th and May 30th.

ASSISTANT: Do you have any connecting limit preferences?

USER: I need a direct flight.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please to proceed further?

USER: Carolyn Adams.

ASSISTANT: No flights found as per your preferences at the moment.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.