You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I support you?

USER: I am James Young. I am very much interested in photo shoot so, I want to book a flight ticket?

ASSISTANT: Ok.

USER: Can you please help me in booking ticket to AUS to shoot different birds?

ASSISTANT: Sure, Can I have your travelling dates please?

USER: 07/18 to 07/20 with  direct flight.

ASSISTANT: May I know your source point?

USER: Source : LGA.

ASSISTANT: Please wait for a while. I am sad to say that there are no flights available with your requirement.

USER: Ok. Thanks for your information.

ASSISTANT: Thank you for contacting us.