You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

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, can you help me out?

ASSISTANT: Please provide your name?

USER: Reservation was made on the name Jeffrey Lopez.

ASSISTANT: Ok. No reservation found for Jeffrey Lopez.

USER: No worries, thank you for the information.

ASSISTANT: Thanks.