You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: May I know your name please?

USER: I am Kevin Young.

ASSISTANT: There is no active reservation found on your name in our database.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for choosing us.