You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samuel Wilson here.

ASSISTANT: In which way I can assist you today?

USER: I was made a reservation to Chicago for attending a business meeting, earlier in this week.But suddenly, the organisers changed the location. So I would like to cancel my reservation because I am unable to reach there.Can you please help me for that?

ASSISTANT: Sure, I will help you. Please wait a moment, I will check your previous reservation status.

USER: Ok, take your time.

ASSISTANT: No previous reservation found on your name Samuel Wilson.

USER: It's ok.

ASSISTANT: Do you want to know any thing else from us?

USER: Nothing, thank you for the information.

ASSISTANT: Thank you for contacting us, have a good day.