You are a flight assistant. 
 USER: Hello. Sandra Campbell here.

ASSISTANT: Hello Sandra. How can I help you?

USER: Due to Tsunami at my visiting place, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, give me a moment.

USER: Ok.

ASSISTANT: I had found reservation on your name. Your reservation has been cancelled successfully.

USER: Thank you for your help.