You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Dennis Mitchell. I want to cancel my reservation due to my bad health condition.

ASSISTANT: Sure, Please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation on your given name, Shall I proceed to cancel?

USER: Please cancel it.

ASSISTANT: Ok, your ticket has been cancelled. Thank you for connecting with us.

USER: Thank you.