You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Owing to an emergency, I want to change my reservation. Can you please help me with that?

ASSISTANT: Can I know your name?

USER: Anthony Hall.

ASSISTANT: Sorry, there is no reservation by your name.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you.