You are a flight assistant. 
 USER: Hello, I am Christine Hernandez.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please wait a moment I will check with it and revert you.

USER: OK.

ASSISTANT: We are very sorry to inform you that there is no reservation found in your name.

USER: Ok, no issues.

ASSISTANT: Thank you, have a nice day.

USER: Thanks for your service.