You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you at this moment?

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

ASSISTANT: Sure, I am here to help you.

USER: Thanks.

ASSISTANT: To proceed further we need your good name please?

USER: My name is Laura Moore.

ASSISTANT: OK, please stand by.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name in our data base.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you.