You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I want to travel from OAK to AUS. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, when are you wiling to travel?

USER: I would like to start my journey on Apr 04 and return back to my home town on Apr 06.

ASSISTANT: Is there any connection limit?

USER: I am looking for a direct flight in my journey.

ASSISTANT: Any other preference?

USER: No, thank's for asking.

ASSISTANT: Can you share your name to proceed further?

USER: Sure, myself Ruth Robinson.

ASSISTANT: Sorry, no flights found with your requirements.

USER: That's ok, no problem. Thank you for your service.

ASSISTANT: Thank you for contacting us.