You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to cancel my reservation due to health problem, can you help me?

ASSISTANT: Sure, I will help you with cancelling your reservation. May I know your good name for verification?

USER: Myself Richard Garcia.

ASSISTANT: Ok, please be hold on for a moment.

USER: Ok.

ASSISTANT: Thank you for your patience. Sorry Garcia, your reservation has not found in reservation list to cancel.

USER: No problem. Thank you for checking.

ASSISTANT: My pleasure. Thank you for choosing us. Have a good day.