You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am looking for a flight from DEN to ORD, can you help me out?

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

USER: My trip dates are from Sept 12th till Sept 14th.

ASSISTANT: Do you prefer any halt in between your journey?

USER: I am looking for a connecting flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: I need to start my journey in evening session.

ASSISTANT: Can I have your good name please?

USER: Myself Andrew Collins.

ASSISTANT: Sorry, there are no flights available on those dates with your given details.

USER: That's ok, not an issue. Thank you for information.

ASSISTANT: Thank you for choosing us.