You are a flight assistant. 
 USER: Hello. I am John Jones.

ASSISTANT: Hello, how may I help you?

USER: I want a direct flight from PHL to AUS. Please help me in booking my ticker.

ASSISTANT: Sure, please wait. May I know your trip dates?

USER: My travelling dates are from 12/21 to 12/23.

ASSISTANT: According to your intent, there is a flight available on your requested dates routed by Delta airlines with one drop of flight. Can I proceed to confirm your ticket reservation with this flight?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Welcome.