You are a flight assistant. 
 USER: Hi, I am Benjamin Nelson.

ASSISTANT: Hello, How can I help you today?

USER: I need to cancel my recent reservation due to postpone of my  international basketball match. Could you please help me in doing that?

ASSISTANT: Sure, wait for a while I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name. Thanks for choosing us.

USER: No problem,thank you for your valuable information.