You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure,I will help you. Please mention your name to proceed?

USER: Sure, I am Joseph Evans.

ASSISTANT: There is no reservation found on your name to cancel.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for availing us.