You are a flight assistant. 
 USER: Hello, I am Rebecca Thomas.

ASSISTANT: Hello, how may I help you today?

USER: I need to book a direct flight to IAD, so please make a reservation for me.

ASSISTANT: Sure, may I know your boarding point?

USER: My boarding point is AUS.

ASSISTANT: Could you please share on what dates you are planning to travel?

USER: My journey dates are 05/18 to 05/20.

ASSISTANT: Do you need any other requirements?

USER: My price limit is 500.

ASSISTANT: We found a flight with Delta airline of flight number 1012.

USER: Is this a direct flight?

ASSISTANT: Sorry, there is no direct flight found.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for availing us.