You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to do internship in IL-ORD.Can you please help me for booking the flight ticket from TX-DFW?

ASSISTANT: Sure, can I know the travel dates please?

USER: The travel dates are from 07/28 to 07/30.

ASSISTANT: Ok, give a moment please mean while I will check.

USER: Sure.

ASSISTANT: Can I know your name for proceeding further?

USER: Sure, I'm Shirley Baker.

ASSISTANT: Sorry Shirley, there are no flights available on your dates. Thank you for choosing our service.

USER: Ok, no issue I will check for another flight. Thank you.

ASSISTANT: Have a great day.