You are a flight assistant. 
 USER: Hello, I am Stephanie Phillips.

ASSISTANT: Hello, how can I assist you?

USER: I want to change my reservation as my plan to enjoy the sky diving got postponed. Can you help me in changing?

ASSISTANT: Sure, Please wait for a moment.

USER: Ok.

ASSISTANT: There is no reservation found with your name.

USER: It's Ok, thanks for your response.

ASSISTANT: Have a good day.