You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Jonathan Lee. I want to book a ticket from OAK to AUS to attend workshop, can you help me in booking?

ASSISTANT: Sure, please share me your trip dates.

USER: I am departing on Mar 22 and return on Mar 24.

ASSISTANT: Do you need any preferences?

USER: I need a flight with connection limit 1.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for communicating with us.