You are a flight assistant. 
 USER: Hello, Steven Lee is my name.

ASSISTANT: Hello, how can I assist you today?

USER: I want to change my existing reservation, due to my interview has been postponed. Can you help me to change my recent reservation?

ASSISTANT: Sure, we are here to help you. Please wait for a few minutes, I will check the status and revert you.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, There was no reservation found on your name.

USER: That's Ok, not an issue. Thanks for your good assistance.

ASSISTANT: Thank you for availing us.