You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I abet you?

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

ASSISTANT: Sure, let me check the status and revert you.

USER: Ok.

ASSISTANT: May I know your name to check?

USER: My name is Anna Lopez.

ASSISTANT: There is no reservation found by this name in our data base.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.