You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Scott Lewis.

ASSISTANT: How may I assist you today?

USER: Can you help me booking a flight ticket from AUS to ORD?

ASSISTANT: May I know when you are planning to depart and arrive?

USER: I will start on 07/09 and return on 07/11.

ASSISTANT: Do you want to fly with economic class or business class?

USER: I am comfortable with any class.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thank you for staying online. We are glad to inform you that there is a flight available with an airline Frontier of flight 1002 and cost is 100. Would you like me to proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.