You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Can I know your name for booking your flight ticket?

USER: My name is Betty Moore.

ASSISTANT: May I know your depart and return time?

USER: I am fine at any time.

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My travelling dates are June 24 and 26.

ASSISTANT:  Do you have any class preference?

USER: No, please book a connecting flight.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: No issues, thank you for your time.

ASSISTANT: Thanks for choosing us.