You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Emma Miller here.

ASSISTANT: How can I help you today?

USER: I would like to prefer a economy class for my business trip to Austin. So can you book the flight ticket for me?

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

USER: The travel dates are from Sept 25 to Sept 27.

ASSISTANT: May I know your source and destination codes?

USER: The airport codes are from JFK to AUS.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is a direct flight-1004 available in Delta Airlines with a fare of 100. Shall I proceed with booking?

USER: I am ok with the airlines. You can book it.

ASSISTANT: Emma Miller, your booking is confirmed successfully in economy class.

USER: Thank you.

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