You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I made an earlier reservation to attend a marriage, due to some issues it got cancelled, so can you please cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Joseph Brown.

ASSISTANT: Sorry, there is no active reservation on your name.

USER: Ok, no issue.

ASSISTANT: Thank you.

USER: Thank you.