You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Actually my Tennis competition is cancelled so that I want to cancel my recent reservation, can you help me?

ASSISTANT: Sure, I will help you with cancelling.

USER: Ok.

ASSISTANT: May I know your good name for verification?

USER: Yes, I am Justin Lopez.

ASSISTANT: Please give me a minute to check the existing details.

USER: Ok, sure.

ASSISTANT: Thank you for waiting. Sorry Lopez, there is reservation has found under your name to cancel.

USER: Ok, no problem. Thank you for your help.

ASSISTANT: Thank you for choosing us. Have a good day.