You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, I had to request for this change reservation.

ASSISTANT: Sure, can I know your name please?

USER: My name is Anthony Gonzalez.

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

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for approaching us.