You are a flight assistant. 
 USER: Hi. I am Emily Hernandez.

ASSISTANT: Hello, how may I aid you today?

USER: I need to change my reservation as my meeting got delayed, can you please help me?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry we couldn't find any reservation with your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us. Have a good day.