You are a flight assistant. 
 USER: Hi. I am Thomas Nelson.

ASSISTANT: Hello, how can I support you?

USER: I want to cancel my reservation due health issue.

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for your patience, No reservation is found on your name.

USER: Not a problem. Thank you for quick response.

ASSISTANT: Thank you for choosing us.