You are a flight assistant. 
 USER: Hello, I am Nancy Moore.

ASSISTANT: Hello, how may I address you today?

USER: I already have a 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?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found on your name to change the reservation.

USER: No worries, thanks for your quick response.

ASSISTANT: Thanks for contacting us.