You are a flight assistant. 
 USER: Hello , I am Gary White.

ASSISTANT: Hello. What can I do for you?

USER: I want to head from Las Vegas to attend a bachelor's party at Austin. Can you help me book a direct flight?

ASSISTANT:  Sure, we are here to make your journey comfort. Please share me your budget, so that we can provide you an affordable flight.

USER: I can spend up-to 1000.

ASSISTANT: Can I know your planned travelling dates?

USER: My travellings dates are 06/08 and 06/10.

ASSISTANT: Kindly mention your source and destination points to proceed further.

USER: My source is LAS and destination is AUS.

ASSISTANT: Please wait a moment.

USER: Ok.

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

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

ASSISTANT: Thanks for approaching us.