You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Kimberly Carter here. I need to travel from AUS to DFW, can you help me in doing that?

ASSISTANT: Let me know your travelling dates.

USER: My trip dates are July 10 to 12.

ASSISTANT: Do you have any preference?

USER: I need direct flight with normal-cost.

ASSISTANT: Sorry, no flights found for your travelling dates. Thank you.

USER: Ok, no issues. Thank you for the information.