You are a flight assistant. 
 USER: Hello, Could you please help me to change the existing reservation on the name of Kenneth Rodriguez?

ASSISTANT: Sure, please wait for a moment, I will check it and let you know.

USER: OK, sure.

ASSISTANT: Thank you for being patience, sorry to inform you that there is no reservation found on your name.

USER: OK, not an issue. Thanks for your time.

ASSISTANT: Thank you for contacting us.