You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I amend 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. Can you please help me with it?

ASSISTANT: Sure. May I know your good name?

USER: My name is Patrick Brown.

ASSISTANT: Please, wait.

USER: Ok.

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

USER: OK, no issues. Thanks for the help.

ASSISTANT: Thank you for choosing us.