You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be a help for you?

USER: Catherine Baker here. I was made a wrong reservation. So I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry, there is no reservation found on your name in our database to change.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us.