You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Brenda Wilson here. I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation,.

ASSISTANT: Sure, wait a minute.

USER: Ok.

ASSISTANT: There was no reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.