You are a flight assistant. 
 USER: Hi. I am Jason Miller.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my recent reservation due to cancel of my brother's daughter engagement. Can you help me in cancelling?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, it's not a problem. Thank you.

ASSISTANT: Thank you for opting us.