You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, can I know your planned travel dates?

USER: My travelling dates are Aug 25 and Aug 27.

ASSISTANT: Do you need any break in between your journey?

USER: I need connecting flight.

ASSISTANT: Do you prefer business or economy class?

USER: No preference.

ASSISTANT: Is there any airline preference do you have?

USER: No requirements.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your good name please?

USER: Myself Emily Nelson.

ASSISTANT: We found a connecting flight 1004 in Delta airlines with cost 100. Shall I proceed for booking with that?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed with economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.