You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Due to sudden rainfall at my source, I want to cancel my recent reservation. Can you please help me for cancellation?

ASSISTANT: Sure, we are here to help you. May I know your good name please?

USER: Sure, I am Richard Martinez.

ASSISTANT: Please wait a minute.

USER: Ok, I will wait.

ASSISTANT: Sorry, there is no reservation found on your name to cancel.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for opting us.