You are a flight assistant. 
 USER: Hi, I am Katherine Garcia.

ASSISTANT: Hello, how can I help 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 with that?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thanks for reaching us.

USER: Thanks for your help.