You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you today?

USER: I am Donna Gonzalez, I need a direct flight to Las Vegas to visit Golden Casino for two days. Can you book a flight under fare of 200?

ASSISTANT: Sure, may I know your airport points?

USER: I will fly from TX-AUS to NV-LAS.

ASSISTANT: When do you planned your schedule dates?

USER: I will travel on 10/20 and return on 10/22.

ASSISTANT: One moment please, I will let you know the information and revert to you.

USER: Sure.

ASSISTANT: Sorry, there is no direct flight found on your journey details.

USER: Ok, thank you for the details.

ASSISTANT: Thanks for contacting us, have a good day.