You are a flight assistant. 
 USER: Hello, I am Steven Young.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a ticket from Chicago, IL - ORD to meet my childhood friend.

ASSISTANT: Sure, please provide your travelling dates.

USER: My travelling dates are 04/06 and 04/08.

ASSISTANT: Please provide your destination airport code.

USER: My destination is Austin, TX - AUS.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.