You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you cancel my recent reservation?

ASSISTANT: Sure, I will help you with your concern. Can I have your name please?

USER: Sure, I am Helen Lewis.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Helen Lewis, no reservation has been found on your name in our database.

USER: That's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.