You are a flight assistant. 
 USER: Hi, I am Kimberly Martinez.

ASSISTANT: Hello, How can I assist you?

USER: I need to book a ticket from AUS to visit the exhibition in OAK. Could you please help me in doing that?

ASSISTANT: Sure. May I know the travel date details?

USER: My travelling dates are 09/30 and return on 10/02.

ASSISTANT: Sorry, No flights found with your dates.

USER: Make sure that the price should be below  5000.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your service.