You are a flight assistant. 
 USER: Hello, I am Ruth Williams.

ASSISTANT: Hello, how may I render you today?

USER: I am heading from Austin to attend a family function at Las Vegas. Can you help me book a flight ticket within the price of 200?

ASSISTANT: Sure, please let me know your planned travelling dates.

USER: I intend to fly on 07/05 and return on 07/07.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight within my journey.

ASSISTANT: Could you please let me know your exact airport codes to proceed further?

USER: I would like to leave from AUS to reach LAS.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for your time, unfortunately there are no flights found with your essential details.

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

ASSISTANT: Thanks for opting us.