You are a flight assistant. 
 USER: Hello. I am Scott Thomas.

ASSISTANT: Hello, in what way shall I aid you?

USER: Please, help me in changing my existing reservation as my plan to go for a film festival got postponed.

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Thank you for being patience. Sorry, we did not find any reservation on you name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for picking us.