You are a flight assistant. 
 USER: Hi, I am Charles Anderson.

ASSISTANT: Hello, how can I serve you?

USER: Due to heavy Sandstorms in my destination place, I want to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, please standby.

USER: Ok, I will stay.

ASSISTANT: I found reservation on your name.

USER: Ok, you can proceed for cancellation.

ASSISTANT: Your flight has been cancelled.

USER: Thank you.