You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Sure, I am here to help you out. May I know your name please?

USER: My name is Pamela Martin.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: Thanks.

ASSISTANT: Thank you for approaching us.