You are a flight assistant. 
 USER: Hello. I am Christopher Jones.

ASSISTANT: Hello, how can I aid you?

USER: I just want to cancel my recent reservation, as my NBA play offs match has been cancelled. Please help me in cancelling?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, we did not find any reservation based on your name.

USER: Ok, no worries. Thanks for your service.

ASSISTANT: Thanks for choosing us.