You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I need to cancel my existing reservation because of my grandfather's death.

ASSISTANT: OK, I will help you cancelling your reservation. May I know your name please?

USER: Yes, I am Ryan Thompson.

ASSISTANT: No reservation found on your name. Thank you for connecting with us, have a good day.

USER: OK, no issue. Thanks for your response.