You are a flight assistant. 
 USER: Hello,. I am Ronald Parker.

ASSISTANT: Hello, how may I aid you?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your reservation status and get back to you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.