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

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no active reservation fond on your given name.

USER: Not a problem, thank you.

ASSISTANT: Thanks for reaching us, have a nice day.