You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: My name is Katherine Taylor I want to book a flight ticket.

ASSISTANT: OK, I will help you on that. May I know your source and destination details?

USER: Yes, I would like to travel from NV-LAS to TX-AUS with 0 connection limit.

ASSISTANT: Do you have any price limit?

USER: The price limit is 5000.

ASSISTANT: And also provide your journey dates?

USER: 03/28 to 03/30.

ASSISTANT: OK, Please wait for sometime.I will check the availability of the flights.

USER: OK.

ASSISTANT: Sorry, No flights found based on your requirements.

USER: OK, Thank you.

ASSISTANT: Thank you.