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

ASSISTANT: Hello, how can I provide assistance to you?

USER: Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Ok.

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

USER: No issue. Thank you.

ASSISTANT: Thank you for opting us, have a good day.