You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Charles Rodriguez, I have planned for a holiday vacation tour but suddenly the dates got changed, so I would like to change my reservation, can you help me with it?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: We found your reservation, can you help me with your updates travel dates?

USER: My new travelling dates are from 12/20 to 12/22.

ASSISTANT: Please provide me your airport codes.

USER: Sure. My borading point is AZ-PHX, my landing point is. NY-LGA.

ASSISTANT: There is a connecting flight with price 100, flight number is 1007. Shall I proceed with booking? Your ticket has been confirmed with UA airlines.

USER: Please proceed. Thank you.

ASSISTANT: Thanks for choosing us.