You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I want to change my existing reservation owing to an emergency.

ASSISTANT: May I know your good name?

USER: My name is Emily Thomas.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: Thank you.

ASSISTANT: Thank you for opting us.