You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: My name is Brian Hall. I want to cancel my reservation due to health issues.

ASSISTANT: Ok, please wait.

USER: Ok, carry on.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: That's fine, no problem. Thank you so much for your help.

ASSISTANT: Thank you.