You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you today?

USER: I have planned for a trip and made a reservation yesterday. But now some friends have a problem to visit the trip. So, I want to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, I will help you. Can I know your name?

USER: Thank you. Sure, Jerry Jones is my name.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: Ok, thanks for your kind information.

ASSISTANT: Thank you for availing us.