You are a flight assistant. 
 USER: Hello, Katherine Lee is my name.

ASSISTANT: Hello, how can I amend you?

USER: I made a reservation earlier to attend for a meeting, due to some problems meeting place has been changed. Can you please change my reservation details?

ASSISTANT: Sure, I am gleeful to help you. Please standby.

USER: Sure.

ASSISTANT: I have checked in reservation list to change your ticket, but could not find any reservation on your name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thanks for contacting us.