You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to change my existing reservation due to some family issues. Can you please help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Sure, my name is Scott Carter.

ASSISTANT: There is no reservation found on your name.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for opting us.