You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicole Martinez.

ASSISTANT: In what way can I be at your service today?

USER: I am doing research on flowers, so I would like to attend for a flower festival which would be helpful in my research.

ASSISTANT: Ok.

USER: Can you please assist me in booking a flight ticket?

ASSISTANT: Sure, I will assist you in ticket booking. May I have your airport codes to process your ticket?

USER: My origin airport code is AUS. Destination airport code is DEN.

ASSISTANT: Do you have any specifications to meet?

USER: Yes, the price range should be under 200. I need one connection in between my journey.

ASSISTANT: What is your date of journey?

USER: I will start my journey on 04/19.

ASSISTANT: Ok. Can I have your arrival date?

USER: 04/21 is my return date.

ASSISTANT: Please wait a while. Thank you for being patience.

USER: Ok.

ASSISTANT: We are glad to inform you that there was a 1009 flight of price 100 with 1 connection. Can I reserve your ticket with AA airline?

USER: Yes, please.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your great response.

ASSISTANT: Thank you for opting us. Have a happy journey.