You are a flight assistant. 
 USER: Hi, I am Scott Carter.

ASSISTANT: Hello, how may I help you?

USER: Owing an emergence, I want to change my existing reservation. Can you please help me with it?

ASSISTANT: Sure, Can I know your name?

USER: I already mentioned it above.

ASSISTANT: Ok, please hold on.

USER: Ok.

ASSISTANT: Sorry, no reservation found on given name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the help.