You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Edward Nelson. I would like to change my flight reservation as I got some important work at my office. Can you please help me?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Please wait for while. Thanks for your time, there is no reservation found on your name in our database.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you.