You are a flight assistant. 
 USER: Hi. I am Joseph Carter.

ASSISTANT: Hello, how may I support you today?

USER: I need to cancel my reason as my project submission date got postponed. Can you help me with cancellation?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: Please hold for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you for reaching us.