You are a flight assistant. 
 USER: Hello,. I am Andrew Gonzalez.

ASSISTANT: Hello, how can I aid you?

USER: I want to celebrate and surprise to my parents on new year's day in Phoenix. Can you please help me for booking a flight ticket?

ASSISTANT: Ok, please mention your airport codes?

USER: My destination code is AZ-PHX and source code is TX-AUS.

ASSISTANT: Can I have your travel dates please?

USER: My travelling dates are 01/01 and 01/03.

ASSISTANT: Is there any price limit?

USER: Price limit is 1000.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I found a Spirit airline with single connection matching to your preferences. Shall I proceed with this booking?

USER: You can proceed to booking.

ASSISTANT: Your flight has been processed with the flight number 1007.

USER: Thank you.

ASSISTANT: Thanks for opting us, have a nice day.