You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my recent reservation, because I have another important work on that day, can you help me?

ASSISTANT: Oh! that's sad, may I know your name to check with your existing reservation status?

USER: Sure, my name is Joseph White.

ASSISTANT: Wait for a moment till I check your reservation.

USER: Ok.

ASSISTANT: I searched for your reservation but, I can not find any reservation under your name.Sorry for the inconvenience Joseph White.

USER: It's ok no problem. Thank you for your information.

ASSISTANT: Can I help you with any other information, please let me know?

USER: No thanks.

ASSISTANT: Thank you for using our services.

USER: Welcome.

ASSISTANT: Have a great afternoon.