You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel my recent reservation due to health issues, can you please help me with that?

ASSISTANT: May I know your name to check your reservation?

USER: My name is Stephen Lopez.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: I found your reservation and I have cancelled it.

USER: Thank you.

ASSISTANT: Welcome, have a good day.