You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to cancel my reservation due to heavy rains at my destination place, so please help me.

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: Can you please provide your name to check your reservation status?

USER: Sure, my name is Dennis Lee.

ASSISTANT: Dennis Lee, I have found your reservation in our database. Would you like me to cancel it?

USER: Sure, please proceed.

ASSISTANT: Your reservation was cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for utilizing our service.