You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Due to health problems I need to cancel my recent reservation can you help me for cancel my recent reservation?

ASSISTANT: Sure, may I know your name for further process?

USER: I am Stephen Smith.

ASSISTANT: Thank you, please stand by.

USER: Sure.

ASSISTANT: Sorry no reservation found with your name.

USER: Ok, Thanks for information.

ASSISTANT: Have a nice day.