You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I just want to cancel my recent reservation, due to heavy rainfall at my destination. Can you please aid me with cancellation?

ASSISTANT: Sure, we are here to help you. Please share your name.

USER: Sure, my name is David Green.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, thank you.

ASSISTANT: Thank you for supporting us.