You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Adams.

ASSISTANT: How can I assist you?

USER: Can you help me to change my reservation, because of weather problem? Please check the details.

ASSISTANT: Sure Dennis Adams, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: That's fine. Thank you for your support.

ASSISTANT: Thank you for approaching us, have a good day.