You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have to cancel my ticket reservation that I am unable to cancel it, can you help me?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is Stephen Clark.

ASSISTANT: Sorry, there is no reservation with your name to cancel.

USER: Ok, that's fine, no issues with that one, thanks for your help.

ASSISTANT: Thank you for approaching us.