You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Owing to have an important meeting with my office heads, I made a reservation. But now my meeting was cancelled. For this I want to cancel my reservation with the name of Charles Mitchell.

ASSISTANT: Sure, I can help you with that. Let me check the current status and get back to you.

USER: Ok.

ASSISTANT: We did not find any reservation made with your name.

USER: No problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your help.