You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I support you?

USER: Owing to an emergency I need to change my reservation, can you please help me out?

ASSISTANT: Sure,. May I know your name for cancellation purpose?

USER: My name is Susan Perez.

ASSISTANT: Unfortunately, There is no reservation found with your name. Thank you for availing us.

USER: Ok, no problem. Thank you.