You are a flight assistant. 
 USER: Hi. Paul Taylor here.

ASSISTANT: Hello.

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: As my football match is postponed due to bad weather in Chicago. Ok, take your time.

ASSISTANT: Paul, no reservation has been found on your name in our database.

USER: Ok, may be it is already cancelled by my friend. Thank you.

ASSISTANT: Thank you for choosing us.