You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation due to health issues, can you please help me with that?

ASSISTANT: Sure, may I know your name please?

USER: My name is Helen Carter.

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

USER: You can cancel it.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you.