You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. By what way shall I support you for the day?

USER: I am Scott Phillips, I want to change my recent reservation due to some health issue, help me in changing my reservation.

ASSISTANT: Ok. Scott Phillips, I did not get any reservation on your name.

USER: Its ok, thank you.

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