You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a flight ticket with the name of George Johnson to Austin, AUS?

ASSISTANT: Sure, please share me your preferable dates to travel.

USER: My preferable dates of journey are 03/02 to 03/04.

ASSISTANT: Ok, let me know your take off point.

USER: Detroit, DTW is my boarding point.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Spirit airline is available on your dates at a price of 100 in economy class. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Your booking has been done in flight number 1021.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.