You are a flight assistant. 
 USER: Hi, I am Samuel Smith from Chicago.

ASSISTANT: Hello. How can I aid you?

USER: I would like to book a flight from IL - ORD to TX - AUS, so please aid me in booking.

ASSISTANT: Sure. Can I know your travelling dates?

USER: My travelling dates are on 06/11 to 06/13.

ASSISTANT: Do you need any break?

USER: Yes, I need it.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No problem, thanks for your assistance.

ASSISTANT: Thank you for choosing us.