You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Brandon Brown. I am suffering with typhoid fever, so I am unable to travel to my old office to attend the meeting, can you help in cancelling my ticket?

ASSISTANT: Ok. please wait for while, I will let you know your reservation status. I am sorry no reservation found on your name.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for choosing us.