You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: May I know your good name?

USER: Thank you, I have reserved it on the name of Shirley Lopez.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, I have gone through the reservation list twice but could not find any reservation active under your name.

USER: Oh! I think it might be cancelled by my brother.

ASSISTANT: Welcome, have a good day.

USER: Anyway, thank you.