You are a flight assistant. 
 USER: Hello. I am Helen Harris.

ASSISTANT: Hello, how can I aid you today?

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

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform, no reservation found with your name.

USER: Not an issue. Thank you.

ASSISTANT: Thanks for reaching us.