You are a flight assistant. 
 USER: Hi. I am Patrick Davis.

ASSISTANT: Hello, how may I benefit you?

USER: I want to see the Arizon desert at Phoenix, can you please book me a ticket with price 200?

ASSISTANT: Sure, may I know when are you willing to travel?

USER: My travelling dates are from 09/26 to 09/28.

ASSISTANT: Kindly share your airport codes.

USER: My journey starts from Austin, TX-AUS to Phoenix, AZ-PHX.

ASSISTANT: Delta airline with flight number 1009 is available on your way and price is 200. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your booking has been confirmed successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.