You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need to reserve a ticket from OAK to AUS, can you help me in doing that?

ASSISTANT: Sure, can you please share your travel dates?

USER: My trip dates are May 21 to 23.

ASSISTANT: May I know your connection limit?

USER: I need a connection limit?

ASSISTANT: Do you have any other specification that you are looking for?

USER: Please ensure that my return time is afternoon.

ASSISTANT: May I know your name to proceed further?

USER: Katherine Taylor here.

ASSISTANT: I am sorry to inform you that that there is no flight available at your request.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.