You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

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

ASSISTANT: Sure, we are here to help you. May I know your good name please?

USER: My name is Kevin Thomas.

ASSISTANT: Sorry to inform you that there are no active reservation found on your given name.

USER: Thank you.

ASSISTANT: Thanks for reaching us, have a nice day.