You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Jason Phillips this side, I am planning to visit ORD from AUS. Can you help me?

ASSISTANT: Sure, may I know your travel dates please?

USER: I want to start on 09/14 and return on 09/16.

ASSISTANT: Ok, hold on for a moment.

USER: Sure.

ASSISTANT: Sorry Jason, there are no flights available.

USER: No issues. Thank you.

ASSISTANT: Thank you for choosing us.