You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket from OAK to AUS?

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: My travel dates are Apr, 3 and Apr, 5.

ASSISTANT: Do you have any other specifications?

USER: I need connecting flight.

ASSISTANT: May I know your good name?

USER: Sarah Smith here.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.