You are a flight assistant. 
 USER: Hello, I am Carol Turner.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, I am here to help you. Please stand by.

USER: OK.

ASSISTANT: Thank you for waiting. Sorry to inform no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.