You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: Please book a ticket from New York, NY-EWR to Austin, TX-AUS. I am Virginia Williams.

ASSISTANT: Sure, please provide your travel dates?

USER: Travelling dates are 08/12 to 08/14.

ASSISTANT: Do you have any specifications?

USER: I need direct flight. Ticket price limit is 1000.

ASSISTANT: Please wait for a while, I will check and revert you.

USER: Sure.

ASSISTANT: Sorry, there is no direct flight available from your source.

USER: Thanks for the help.

ASSISTANT: Thank you for availing us.