You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I would like to change my reservation because I met with an accident, can you please help me with this?

ASSISTANT: Sure, I am glad to help you.

USER: Ok.

ASSISTANT: May I know your name please?

USER: Alexander Hernandez here.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Alexander Hernandez, no reservation has been found on your name in our database.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.