You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Please provide me the travel dates?

USER: Sure, my travel dates are Aug 22 and Aug 24.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Would you prefer to take a connection limit?

USER: Yes, I want a connecting flight.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No.

ASSISTANT: May I know your name please?

USER: Sure, myself Christopher Jones.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Christopher Jones. I regret to inform that there are no flights on your route with the given dates.

USER: That's fine, not an issue. I will go with other service. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us.