You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Benjamin Carter. Can you help me in cancelling my reservation, as my exam is postponed?

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to notify that, we couldn't find any reservation with your name.

USER: No issue, thank you.

ASSISTANT: Thank you for availing us.