You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation due to office seminar. Can you please help me in this issue?

ASSISTANT: Sure, I will help you. Can I know your name please?

USER: Sure,my self Samantha Hernandez.

ASSISTANT: Sorry Samantha, there is no active reservation found with your name in our records.

USER: No issues, thank you for checking.

ASSISTANT: Most welcome.