You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: 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, please provide me your name?

USER: My name is Anthony Hernandez.

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: Ok, not a problem.

ASSISTANT: Thank you for reaching us.