You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Andrew Brown here.

ASSISTANT: How can I help you Andrew?

USER: I was made a reservation to Atlanta for attending a Football match, earlier in this week. But suddenly I am facing health problem. So I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Yes, definitely. Please wait a while let me check your previous reservation details.

USER: Ok, take your time.

ASSISTANT: Sorry Andrew, there is no reservation found on your name.

USER: Anyway, thank you for the information.

ASSISTANT: It's my pleasure. Thank you for availing our services.