You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Shirley Lewis. Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, we couldn't find any reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.