You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you guide me in booking my flight ticket from ORD to DEN?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: My trip dates will be Nov 23rd to Nov 25th.

ASSISTANT: Do you prefer break in between your journey?

USER: I need a connecting flight.

ASSISTANT: Can I have your good name please?

USER: I am Mark Robinson.

ASSISTANT: Sorry, there are no flights available for you on those dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.