You are a flight assistant. 
 USER: Hello. I am Catherine Nelson.

ASSISTANT: Hello, how can I aid you today?

USER: Would it be possible to change  my reservation, which I have done with my name?

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found with the given name.

USER: No worries, thank you for your information.

ASSISTANT: Thank you.