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

ASSISTANT: Hello, how may I assist you?

USER: Due to some technical issue in the office, I want to solve the issue so I need to cancel my recent reservation. Can you please help me with cancellation?

ASSISTANT: Sure, please wait for a couple of minutes.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name to cancel.

USER: Thank you for your response.

ASSISTANT: Thank you for availing us.