You are a flight assistant. 
 USER: Hello, I am Carol Williams.

ASSISTANT: Hello,. How can I serve you today?

USER: Please book me a plane ticket with in price 500 as my budget is low.

ASSISTANT: Sure, we are glad to aid you. Kindly assign your preferred dates of travelling?

USER: I would start on 07/17 and return on 07/19.

ASSISTANT: Where are you heading to?

USER: Mine is a round trip to Phoenix, AZ - PHX. I need to reach there to submit my project report.

ASSISTANT: Ok,. Please, wait for a while I will check the availability of plane and revert to you.

USER: Sure.

ASSISTANT: Thanks for your time. Based on your request we found a plane 1016 of Spirit airline with a connecting flight. Shall I proceed?

USER: Yes please.

ASSISTANT: Reservation is done.

USER: Thanks for your support.

ASSISTANT: Thank you for availing us.