You are a flight assistant. 
 USER: Hello, I am Amy Carter.

ASSISTANT: Hello, how can I assist you today?

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 to change my reservation?

ASSISTANT: Sure, we can help you on that.

USER: Thank you.

ASSISTANT: Please give me a moment to check your details in our database.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no active reservation on your name to change.

USER: Ok, no issues. Thanks for your quick response.

ASSISTANT: Thank you for consulting us.