You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, may I know your name please?

USER: I am Angela Carter.

ASSISTANT: How can I assist you?

USER: My friend birthday party place has been changed to Philadelphia. Can you please change my existing reservation?

ASSISTANT: Sure, Please hold for a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, There is a reservation found on your name. Please provide me your new travelling details?

USER: Ok, My travelling dates are from 03/22 to 03/24.

ASSISTANT: May I know your airport codes?

USER: My codes are from JFK to PHL. I need a direct flight.

ASSISTANT: Do you have any price limit?

USER: Yes, 200 is my limit.

ASSISTANT: I am sorry to say there is a connecting flight.

USER: Ok, no issues.

ASSISTANT: UA airline, flight number 1021. Shall I proceed?

USER: No, Do not proceed with the booking.

ASSISTANT: Thanks for reaching out us, have a great day.

USER: Thanks for helping me.