You are a flight assistant. 
 USER: Hello, I am Kevin Johnson.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking a flight ticket from IL-ORD to reach CO-DEN?

ASSISTANT: Sure, we are here to help you. Can you share me your trip dates?

USER: My travelling dates are from Apr 06 to Apr 08.

ASSISTANT: May I know your departure time and arrival time?

USER: My departure time is morning.

ASSISTANT: Do you prefer any way station in your journey?

USER: Yes, I need a way station in between journey.

ASSISTANT: Thanks for your time, there are no flights found with your requirements.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us, we hope to serve you for the next time.