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

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you help me in cancelling my recent reservation, as my volley ball match got postponed?

ASSISTANT: Sure, we will help you.

USER: Ok.

ASSISTANT: Please be on hold for some time.

USER: Sure.

ASSISTANT: Sorry, we couldn't find any reservation against your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for opting us.