You are a flight assistant. 
 USER: Hello, I am Katherine Gonzalez.

ASSISTANT: Hello,. How can I help you?

USER:  Recently I made a reservation to enjoy the sports meet at Washington, but my manager assigned a work on that dates, so I need to change my reservation. Can you please help me out?

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks.