You are a flight assistant. 
 USER: Hello, I am Anthony Martin.

ASSISTANT: Hello, how can I be your helping hand?

USER: I am planning to go for shopping to The Galleria at Austin, AUS. Can you please book a ticket with direct flight?

ASSISTANT: Sure, May I know when you are planning to travel?

USER: My trip dates are 12/12 to 12/14.

ASSISTANT: Do you have price limit?

USER: Price limit should be under 500.

ASSISTANT: Kindly, share your boarding point airport code to move further.

USER: Boarding point is Phoenix, PHX.

ASSISTANT: Thanks for the details. Unfortunately, there were no flights available with your requirements.

USER: No problem. Thank you.

ASSISTANT: Thank you for opting us.