You are a flight assistant. 
 USER: Hello. My name is Dorothy Moore.

ASSISTANT: Hello, how can I help you today?

USER: Due to my health issues, I need to cancel my recent reservation. Please help me with that.

ASSISTANT: Sure, please wait for a moment.

USER: Thank you.

ASSISTANT: We found a reservation with your given name, shall I cancel it?

USER: Please cancel it.

ASSISTANT: Your flight ticket has been cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.