You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: My name is Debra Baker.

ASSISTANT: Sorry to inform you that there is no active reservation found on your given name.

USER: Not an issue. Thank you.

ASSISTANT: Thanks for contacting us.