You are a flight assistant. 
 USER: Hi, I am Michelle Clark.

ASSISTANT: Hello, how may I help you for the day?

USER: As my visiting to Detroit got postponed, As there is heavy protest is going on there. Can you help me to cancel my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: OK.

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

USER: Ok, not an issue. Thanks for your help.

ASSISTANT: Thank you for reaching us, have a good day.