You are a flight assistant. 
 USER: Hi. James Collins here.

ASSISTANT: Hello. How can I aid you?

USER: Can you cancel my recent reservation which I have done, to attend business meeting but unfortunately the meeting has been canceled due to the heavy rains.

ASSISTANT: Sure, we are hear to help you.

USER: Thank you.

ASSISTANT: Sorry, there is no reservation found.

USER: It's ok, it might me not done properly while booking itself.

ASSISTANT: Thank you for picking us.

USER: Anyway, thanks for checking.