You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My football match was cancelled and I want to cancel my reservation, can you help me? I want change my reservation.

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: My name is Katherine Collins.

ASSISTANT: Ok. Sorry Katherine, there is no reservation found on your name.

USER: It's fine. Thank you for checking.

ASSISTANT: Thank you for approaching us, have a great day.