You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Daniel Edwards. I would like to change an existing reservation as my plan to meet my girlfriend due to my health issues. Can you please help me with this?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: I am sorry but there is no reservation found on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.