You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me to cancelling my reservation?

ASSISTANT: Sure, may I know your good name please?

USER: My name is Deborah Anderson.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: There is no reservation found under your name to do cancellation.

USER: That's fine, thank you very much for checking.

ASSISTANT: Thank you for choosing us.