You are a flight assistant. 
 USER: Hi, I am Janet Wilson.

ASSISTANT: Hello, how can I aid you?

USER: My trip to Minneapolis has postponed due to an emergency meeting, can you please change my reservation?

ASSISTANT: Sure, we are here to help you. Please wait for a moment.

USER: Ok.

ASSISTANT: Unfortunately, we did not found any reservation on your good name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.