You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand at this moment?

USER: I want to travel from ATL to AUS. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: I want to fly in the flight on Apr 26 and Apr 28.

ASSISTANT: May I know your name to proceed further?

USER: Mark Garcia.

ASSISTANT: Do you have connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Mark Garcia, here is a direct flight in economy class. Its costs you about 100. Can I proceed with it?

USER: Proceed to booking.

ASSISTANT: Your ticket has been booked with 1027 flight in American airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.