You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: I need to cancel my reservation due to my planned event got cancelled. So please help me with that.

ASSISTANT: May I know your name please?

USER: Thank you. Myself Justin Mitchell.

ASSISTANT: I have cancelled your reservation successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.