You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for the day?

USER: I am planning to book a flight ticket to DEN from PHL, can you please help me out?

ASSISTANT: Sure, I am here to help you with that. Can you please share your preferable travel dates?

USER: Sure, my trip dates are Feb 19 and Feb 21.

ASSISTANT: May I know your name please?

USER: Sure, my name is Scott Walker.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Can I know your connection limit?

USER: I am looking for a direct flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, there are no flights found on this route as per your details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us, have a great day.