You are a flight assistant. 
 USER: Hello,. I am Raymond Allen.

ASSISTANT: Hello, how can I assist you?

USER: I need to change my reservation as there is a change in my plan. Will you help me in changing my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a few minutes, I will check with the reservation on your name and revert to you.

USER: Sure.

ASSISTANT: Thank you for being patient, we are sorry to inform you that there was no reservation found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.