You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hi. How can I help you?

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

ASSISTANT: Sure, May I know your name please?

USER: My name is Emily Evans.

ASSISTANT: I am sorry Mr.Emily Evans, I cannot find any reservation on your name.

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