You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be of your help?

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 check the reservation by the name Kenneth Hall?

ASSISTANT: Sure, give me a minute to check and get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting. Unfortunately there is no reservation found according to your name.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for choosing us.