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

ASSISTANT: Hello. How can I assist you?

USER: My grandparents health is not good, so I want to cancel my reservation.

ASSISTANT: Sure.

USER: Can you help me with this?

ASSISTANT: Ok. Sorry to say that there is no reservation found on your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: You are welcome.