You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

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

ASSISTANT: Sure. May I know your good name please?

USER: I am Margaret Clark.

ASSISTANT: Do you have any specifications to met?

USER: Price limit 1000. Connections limit 1.

ASSISTANT: Can I have your travelling dates please?

USER: Travelling dates are from 07/07 to 07/09.

ASSISTANT: Please, hold on for a while.

USER: Sure.

ASSISTANT: Thank you for being patience. Unfortunately, there are no flights available with your requirements.

USER: Thanks.

ASSISTANT: Thank you for contacting us.