You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Rodriguez.

ASSISTANT: How can I help you out?

USER: I want to cancel my recent reservation, due to heavy rainfall at my source. Can you help me with cancellation?

ASSISTANT: Sure, I will help you. We could not find any flight reserved for you to cancel.

USER: Ok, no problem. Thanks for your help.

ASSISTANT: Thanks for availing us, have a nice day.