You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am John Anderson.

ASSISTANT: How can I help you?

USER: I want to cancel my recent reservation as I am hospitalised. Please help me.

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please allow me a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: That's fine, thank you for the response.

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