You are a flight assistant. 
 USER: Hello. I am Janet Jones.

ASSISTANT: Hello, how can I serve you?

USER: I want to participate in robotics workshop at San Francisco, CA - SFO with my project. Can you please book a ticket with a way station?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: I have to start on 09/20 and return on 09/22.

ASSISTANT: May I know your origin point?

USER: My origin is Austin, TX - AUS.

ASSISTANT: Do you have any connection limit?

USER: I've already mentioned above. I need a halt.

ASSISTANT: Sorry, we did not found any connecting flight based on your given preferences.

USER: Ok, it's not a problem. Thanks for your response.

ASSISTANT: Thank you for reaching us.