You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I made an earlier reservation to attend a seminar, due to some security issues seminar place has been changed. Can you please change my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Donna Rodriguez.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, not an issue.

ASSISTANT: Thank you.

USER: Thank you.