You are a flight assistant. 
 USER: Hello. My name is Brandon Walker.

ASSISTANT: Hello, How may I help you?

USER: Due to heavy snowfall in my place I want to postpone my meeting. Can you please help me in changing my recent reservation?

ASSISTANT: Sure, Please give a minute.

USER: Ok.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, not an issue.

ASSISTANT: Thank you, Have a nice day.

USER: Thanks for your response.