You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I abet you today?

USER: I am Melissa Smith, I want to book a flight from Austin to Chicago to visit science fair. Can you book a flight on 03/16?

ASSISTANT: Sure, we are here to help you. Kindly, share your airport locations.

USER: I will fly from TX-AUS to IL-ORD.

ASSISTANT: When you are coming back?

USER: My return date is 03/16 and I will start journey on 03/14.

ASSISTANT: Thanks for sharing your details. There is no flight found to your route.

USER: Ok, thank you for the details.

ASSISTANT: Thank you for availing us.