You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to an emergency, I want to change my reservation. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Brian Perez here.

ASSISTANT: Please wait for a moment to check your details.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.