You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Angela Parker. 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: Sure, I will help you. Please wait a while.

USER: Ok.

ASSISTANT: There is no reservation on your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.