You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to make some changes in my previous booking due to wrong dates booking, can you please do some modifications in my booking?

ASSISTANT: Sure, may I know your name please to proceed further?

USER: Sure, I am Jacob Davis.

ASSISTANT: Please wait a minute, Jacob.

USER: Sure.

ASSISTANT: Jacob, there are no active reservations found with your details.

USER: Ok, that's fine. Thanks for your quick hand help.

ASSISTANT: Thank you for choosing us, have a good day.