You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Kevin Williams here.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: That's Fine, Thank you for the information.

ASSISTANT: Thank you for choosing us.