You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I can help you and can I know your name please?

USER: Sure, My name is Daniel Davis.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found for the user name in our data base to help you with cancellation process.

USER: Ok, No issues, thanks for the information.

ASSISTANT: You are most welcome and have a nice day.