You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my recent reservation, due to heavy floods at my destination. Can you please help me with cancellation?

ASSISTANT: Sure, please share your name to search your active reservation.

USER: Sure, you can check my reservation on the name of Charles Walker.

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: I don't see any reservation on your name to cancel.

USER: Ok, thanks for your service.

ASSISTANT: Thank you.