You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to cancel my ticket, can you help me with that?

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: I am Katherine Clark.

ASSISTANT: I found your reservation on your given name and it has been cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.