You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Helen Carter.

ASSISTANT: How can I assist you?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, I will help you with that. Please be on hold. I will check and revert you.

USER: Ok, sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your name to cancel.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for availing us.