You are a flight assistant. 
 USER: Hi, I am Jason Carter.

ASSISTANT: Hello,. How can I support you today?

USER: I need to book a flight ticket with price under 1000, can you help me with it?

ASSISTANT: Sure, we are here to help you. May I know your journey locations?

USER: Sure, I would like to start from PA-PHL to TX-AUS.

ASSISTANT: Kindly, provide your trip  dates.

USER: Sure, my travelling dates are 10/14 and return on 10/16.

ASSISTANT: Thanks for sharing your details. Unfortunately, there is no flight found on dates to your route.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.