You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to change my reservation due to postponed of my Cricket match, so please help me in changing.

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Sure, my name is Debra Martin.

ASSISTANT: We found a reservation on your name in our database. Can you please share your airport codes?

USER: Sure, my airport codes are LAX - ATL.

ASSISTANT: May I know your planned trip dates?

USER: My planned dates are on Dec 21st to 23rd.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight in normal-cost airline.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in afternoon time.

ASSISTANT: We found a connecting flight of fare 100 with airline United and number is 1018. Can I proceed?

USER: Ok, please change my reservation.

ASSISTANT: Your ticket has been confirmed in economy class and depart is in the afternoon at 16:00 PM.

USER: Thank you.

ASSISTANT: Thank you.