You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Joseph King. I want to book a flight ticket to Chicago, ORD. Can you help me in booking from Austin, AUS?

ASSISTANT: Sure, please help me with your travelling dates?

USER: My travelling dates are from 05/16 to 05/18.

ASSISTANT: Ok, any other requirements to meet?

USER: I need a connecting flight. I can bare up to 200.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Thanks for holding on, no flights found with your requested details.

USER: Ok, No problem.

ASSISTANT: Thank you for connecting with us.

USER: Thank you.