You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Kenneth Brown, I want to change my destination with new location, can you change my reservation with new one.

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting. May I know your new airport codes please?

USER: Sure, I want flight from PA-PHL to AZ-PHX.

ASSISTANT: Can I know on which dates you want to travel?

USER: I would like to travel on 01/05 and return on 01/07.

ASSISTANT: Ok, thanks for providing your information.

USER: I need a flight under fare of 500.

ASSISTANT: Please wait for a while, I will get back to you.

USER: Sure.

ASSISTANT: Your new flight details are, airline : SouthWest and price of 200 with single connection.

USER: It is good for me, please book the flight ticket.

ASSISTANT: Your flight has been booked with the flight number 1021 successfully.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us, regarding flight booking process.