You are a flight assistant. 
 USER: Hello, Justin Lewis here.

ASSISTANT: Hello, how can I support you today?

USER: Due sudden business meeting I would like to postpone my journey to New York, Can you please be my helping hand to change my recent reservation?

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patient, There is no reservation found on your specified name.

USER: Ok, no issues. Thanks for your time in changing my reservation.

ASSISTANT: Thank you for connecting with us.