You are a flight assistant. 
 USER: Hello, I am Barbara Williams.

ASSISTANT: Hello, how may I help you at this moment?

USER: Can you search for the flights available from ATL to OAK?

ASSISTANT: Please provide your travelling dates.

USER: I am planning to start on 06/16 and return back on 06/18.

ASSISTANT: Please wait for a while.

USER: Make sure that connection limit is 1.

ASSISTANT: There is a connecting flight available with Delta airline, shall I book it?

USER: Yes, you can go ahead.

ASSISTANT: Your booking is done with flight number 1003. Happy journey.

USER: Thank you. You are welcome.

ASSISTANT: Welcome.