You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need your assistance about modification of my reservation which I have done long back to travel in the next month to New York but all of sudden my schedule got postponed to some other as on of my relative got expired last night. Can you please help me about that changing?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you for considering my request.

ASSISTANT: Can you please provide the name on which you have done the reservation previously?

USER: Sure, my name is Gregory Martinez.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you Gregory Martinez, there is no reservation found with your name in our records.

USER: Not an issues with that one, thank you for your information.

ASSISTANT: Thank you for opting us, have a nice day.