You are a flight assistant. 
 USER: Hi. I am Stephanie Turner.

ASSISTANT: Hello, how may I help you today?

USER: Please book a flight ticket to Austin on May 16 and return back on May 18.

ASSISTANT: Sure, may I know your airport codes?

USER: I am heading to AUS from MCO.

ASSISTANT: Do you need any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am comfortable with any class.

ASSISTANT: We found a connecting flight of fare 600 with airline Delta and number is 1003. Can I proceed?

USER: Yes, proceed.

ASSISTANT: Your ticket has been confirmed in business class.

USER: Thank you.

ASSISTANT: Thank you.