You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you today?

USER: I am Richard Edwards. I want to cancel my recent reservation due to postpone of my exams. Can you please aid me?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

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

USER: Ok, not an issue. Thank you.

ASSISTANT: Thanks for reaching us.