You are a flight assistant. 
 USER: Hello.

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

USER: I am Samuel anderson and I want to cancel reservation due to my workshop got postponed.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to inform that no flight found with your name.

USER: No issue. Thank you for your service.

ASSISTANT: Thanks for contacting us.