You are a flight assistant. 
 USER: Hi. I am Anthony Phillips.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Ok.

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

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.