You are a flight assistant. 
 USER: Hello, I am William Moore.

ASSISTANT: Hello, how can I help you?

USER: Due to bad weather, match has been abonded. Can you please help me out in cancelling my recent reservation?

ASSISTANT: Sure, please wait for a moment.

USER: OK.

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

USER: OK, no problem. Thank you for the information.

ASSISTANT: Ok, thanks for choosing us.