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, please share your name.

USER: My name is Stephen Brown.

ASSISTANT: Please wait for a moment to check.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: Ok, no issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.