You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am looking for a flight from DFW to DEN, can you help me in booking?

ASSISTANT: Sure, can you share your trip dates?

USER: Sure, my planned travel dates are Mar 18 and Mar 20.

ASSISTANT: Do you have any connection limit?

USER: Please look for a connecting flight.

ASSISTANT: Is there any class preference?

USER: I prefer for a business class.

ASSISTANT: Are there any other specifications?

USER: No, thank you.

ASSISTANT: Please forward your name.

USER: Myself Kevin Scott.

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

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for availing us.