You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am looking for a flight from ORD to IAD, can you please help me in booking?

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

USER: My travelling dates are Sept 25th and Sep 27th.

ASSISTANT: Do you prefer break in between your journey?

USER: I need a direct flight.

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

USER: No, thanks for asking.

ASSISTANT: Can I have your good name please?

USER: My name is Jonathan Nelson.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.