You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to attend Hockey competition in Dallas DFW from PHL. Can you find a flight ticket for me?

ASSISTANT: Sure, Can you please share your trip dates?

USER: Ok, my itinerary dates are on June 01 and return on June 03.

ASSISTANT: Is there any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you prefer either economy class or business class?

USER: Yes, I want a business class.

ASSISTANT: Are there any other requirements?

USER: No, I don't have any other requirements.

ASSISTANT: Please forward your name.

USER: Ok, I am Linda Edwards.

ASSISTANT: sorry, there are no flights found on your specified trip dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you.