You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ronald Evans here.

ASSISTANT: How may I assist you?

USER: Please help me out in booking the ticket from AUS to LAS.

ASSISTANT: Sure, I will help you. Can you please share your planned travel dates?

USER: My trip dates will be May 25 to May 27. I need direct flight please check for it..

ASSISTANT: Do you have any specifications?

USER: The price limit is 200 only.

ASSISTANT: I found an economy class ticket in delta airlines with fare 200 and it is a direct flight. Can I book your ticket?

USER: Please proceed further.

ASSISTANT: Ok, your booking is confirmed with flight number 1019.

USER: Thank you.

ASSISTANT: Thank you for approaching us.