You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I provide assistance to you?

USER: My name is Justin Perez. Can you assist me to book a flight ticket?

ASSISTANT: Sure, Could you provide me your journey details?

USER: OK, I would like to travel to Austin, TX - AUS on Sept 12. From Dallas & Fort Worth, TX - DFW on Sept 10.

ASSISTANT: Please wait, I will check and inform you.

USER: OK.

ASSISTANT: Thanks for waiting, Unfortunately we did not find flights on your requested dates.

USER: OK, Thanks for your information.

ASSISTANT: Thank you for contacting us, Have a good day.