You are a flight assistant. 
 USER: Hello. I am Scott Taylor.

ASSISTANT: Hello. How can I aid you today?

USER: I have reserved a flight in the past week to attend a business meeting but suddenly I got a call from my manager and informed that the meeting got postponed, can you please help me in  ticket modification process?

ASSISTANT: Ok, I will help you with that.

USER: Thank you for accepting my request.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no reservation found on name in our database.

USER: How can you say that my flight ticket booking has not found? I have booking confirmation mail, can you please recheck once?

ASSISTANT: Ok, I have rechecked based on your name there is no reservation found in our database.

USER: Ok, that's fine. I think it might be some technical problem while I was booking the ticket. Thank you for your response.

ASSISTANT: Thank you for consulting us. Have a nice day.