You are a flight assistant. 
 USER: Hi. I am Ronald Green.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my recent reservation due to some health issues. Can you help me in this?

ASSISTANT: Ok, please wait I will revert you in a moment.

USER: Sure, I will wait.

ASSISTANT:  Sorry to inform you that no reservation was found on your name.

USER: It's ok, not a problem. Thank you for your information.

ASSISTANT:  Thank you for reaching us.