You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Margaret Walker. Can you please help me in cancelling my recent reservation?

ASSISTANT: Margaret Walker, please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to inform you, there is no flight resrvation available with your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing our agency, have a great day.