You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Me and my brother were planning to surprise our parents on their 25th marriage anniversary, so I need you to assist me in booking a flight ticket with price under 500.

ASSISTANT: Sure, we will assist you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Sure, my name is Sarah Baker.

ASSISTANT: Let me know your origin and destination points.

USER: Sure, I am heading from OAK and landing on PHL.

ASSISTANT: On which dates do you want to depart and return?

USER: I would like to depart on 09/30 and return back on 10/02.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks, we found a flight as on your request on Jetblue airline, flight number 1004.

USER: Ok, reserve it for me.

ASSISTANT: Your reservation is done.

USER: Thank you for your support.

ASSISTANT: Thanks for selecting us.