You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Brian Turner want to visit Austin, can you help me for booking my flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please share on what dates you are willing to travel?

USER: Sure, my travelling dates will be 08/01 and 08/03.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: Yes, I want to fly from OAK to AUS.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure, check for the best flight with 1 connection.

ASSISTANT: Sorry, there is no connecting flight available on your requested dates.

USER: That's ok, thank you.

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