You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my recent reservation because my project work is not yet finished.

ASSISTANT: Ok.

USER: Can you help me please?

ASSISTANT: Yes, I can help you. Can I know your name for checking your previous reservation?

USER: My name is Kenneth Lewis.

ASSISTANT: Ok Kenneth, give me a moment.

USER: Sure. Carry on.

ASSISTANT: Sorry to inform you that there is no reservation found on your name in our database.

USER: That's fine, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.