You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I want to cancel my recent reservation as my plan to meet my old friend got postpone due to my health issues. Can you help me in cancellation?

ASSISTANT: May I know your good name please?

USER: I am Dorothy Lee.

ASSISTANT: Just hold on a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.