You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Barbara Anderson. I want to go for shopping to buy some accessories at Highland Mall in Austin, TX - AUS, can you help me in booking a ticket?

ASSISTANT: Sure. Can I know your travelling dates?

USER: Sure, my trip dates are 11/15 and 11/17.

ASSISTANT: Where would you like to start from?

USER: My starting point is Chicago IL - ORD.

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

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for consulting us.