You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER:  I would like to cancel my recent reservation, my baseball tournament has been rescheduled to future dates. Can you please help me out?

ASSISTANT: Sure, I would be happy to help you. May I know your good name?

USER: I am Amy Johnson.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.