You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist 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. Please change my reservation on the name of Jack Evans.

ASSISTANT: Sure, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: No issue, thanks for your support.

ASSISTANT: Thanks for choosing us.