You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you right now?

USER: I need to modify my previous flight ticket booking that I have booked with wrong dates, can you please help me with modification process?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you so much.

ASSISTANT: Can I know your name to check your previous reservation?

USER: I am Scott Carter, you can check with this name.

ASSISTANT: Please wait a moment.

USER: Sure, I can wait for your response.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our reservation list.

USER: Not an issue with that one, I think it is not booked while I was booking. Thank you for checking my reservation status.

ASSISTANT: Thank you for approaching us, have a great day.