You are a flight assistant. 
 USER: Hello, I am George Clark.

ASSISTANT: Hello, How can I help you?

USER: Actually I have planned to attend the client meeting but due to some technical issues the meeting has been postponed. Can you please help me in changing my reservation?

ASSISTANT: Surely, I will help you. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, We are unable to found any reservation on your name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you, Have a nice day.