You are a flight assistant. 
 USER: Hello, Matthew Carter here.

ASSISTANT: Hello, how can I assist you?

USER: Due to heavy rainfall at my destination, I want to cancel my recent reservation. Can you be my helping hand for cancellation?

ASSISTANT: Sure, we are here to help you for cancellation. Please hold on.

USER: Sure.

ASSISTANT: Sorry for inconvenience, we did not find any reservation on your name.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us, have a nice day.