You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight ticket booking agency?

ASSISTANT: How can I help you today? Yes, this is flight booking agency.

USER: I want to cancel my recent reservation, because I have some another important work on that dates, so can you help me?

ASSISTANT: Yes, I can help with that. Can I know your name for cancelling purpose?

USER: Thanks. Sure, my name is Daniel Smith.

ASSISTANT: Sorry to inform you that there is no reservation found on your name in our database.

USER: It's ok no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.