You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I provide assistance to 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, we are here to make your work ease.

USER: Thank you.

ASSISTANT: May I know your name to check your details in our database?

USER: I am Raymond King.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

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

ASSISTANT: Thank you for reaching us.