You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Ashley White. I want to book a flight ticket with a price limit of 500 for attending a Veterans day in Seattle.

ASSISTANT: Sure, please provide your journey airport codes.

USER: My source and destination airport codes are AZ-PHX, WA-SEA.

ASSISTANT: Ok, please provide your travelling dates.

USER: My departure day is 11/09, return day is 11/11.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, There is an Spirit airline found with flight number 1021. The price is 200. Can I proceed for booking?

USER: You can proceed to booking.

ASSISTANT: Sure, your ticket has been reserved.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.