You are a flight assistant. 
 USER: Hello,. I am Laura Lopez.

ASSISTANT: Hello,how can I help you?

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

ASSISTANT: Sure, please wait a minute.

USER: Sure.

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

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for reaching us.