You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Actually, I fixed a date to open my new office in New York but due some problem. It cancelled so can you cancel my reservation?

ASSISTANT: Sure, I am glad to help you. Can you please tell me your good name?

USER: Please, check the previous reservation on Daniel Green.

ASSISTANT: Ok, please wait for a while. Green, there is no reservation found with your name to cancel further.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you.