You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I have to meet my sister in Chicago, can you please help me to book the flight ticket from AUS to ORD?

ASSISTANT: Sure, may I know your travel dates?

USER: My departure date is on 07/19 and return back on 07/21.

ASSISTANT: Can I know your good name please?

USER: My name is Kimberly Miller.

ASSISTANT: Flight-1023 from Frontier airlines is there for you with travel charge of 200, is it ok for you?

USER: That's perfect! Please book the ticket for me.

ASSISTANT: Your ticket has been booked with flight-1023, have a safe journey.

USER: Thank you very much.

ASSISTANT: Thank you so much for reaching us.