You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Young.

ASSISTANT: How may I assist you today?

USER: I want to cancel my recent reservation due to an emergency work, can you please help me with that?

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: We are happy to inform you that there is a reservation found on your given name. Shall I cancel it?

USER: Yes, please.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.