You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you now?

USER: Michael Jones on this end.

ASSISTANT: Ok.

USER: I would like to cancel my reservation as I need to take my son to hospital for his checkup, can you help me?

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

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

USER: Ok, that's fine. Thank you for checking.

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

USER: You are welcome.