You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please change my reservation, due to an emergency?

ASSISTANT: Sure, I will do that for you. May I know your name?

USER: My name is Michelle Turner.

ASSISTANT: Thank you. Please wait for a while, let me check your reservation status.

USER: Sure.

ASSISTANT: Sorry, I did not find any reservation under your name in our database.

USER: Ok, no issue. Thank you.

ASSISTANT: You are most welcome.