You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you for the day?

USER: I need you to book a flight ticket from SFO to AUS. Please help me.

ASSISTANT: Sure, I am here to help you with that.  Can you please share your preferable travel dates?

USER: September 18 and 20 are my planned travelling dates.

ASSISTANT: May I know your name please?

USER: My name is Kevin Thomas.

ASSISTANT: Do you have any class preference?

USER: Nothing.

ASSISTANT: Is there any other specifications?

USER: I need you to check for a connecting flight.

ASSISTANT: There is a connecting flight-1007 with single connection limit with a fare of 200. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Kevin Thomas, your booking is done in economy class.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us, have a safe journey.