You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Joshua harris and I want to cancel my resent reservation due to my board meeting got cancelled.

ASSISTANT: Ok, Please hold. I will check the database and revert you.

USER: Sure.

ASSISTANT: Thanks for your time. There is no reservation found matching your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.