You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Cynthia Mitchell. I want to cancel my recent reservation due to heavy rainfall, can you help me in cancellation?

ASSISTANT: Sure, let me check and revert to you.

USER: Ok.

ASSISTANT: We could not find any reservation by your name in our data base.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.