You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joseph Rodriguez here.

ASSISTANT: How can I assist you today?

USER: I would like to visit Zilker park in Austin and also planned to meet my family members there. Can you please help me for booking the flight ticket?

ASSISTANT: May I know your convenient airport codes for checking is there any flight available or not in this route.

USER: My airport codes are from OAK to AUS.

ASSISTANT: Could you please share your travel dates?

USER: My departure date is 01/03 and return date is 01/05.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Ok, make sure my connections limit is 1.

ASSISTANT: Sure. Sorry for the inconvenience, no flights available as per your requested dates.

USER: So sad. Anyway, thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day Joseph.