You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I am Sharon Scott. I made a reservation earlier on the wrong date unknowingly so, I want to change my reservation as per my schedule. Can you please serve me in that?

ASSISTANT: Sure, I am glad to help you. Please wait for couple of minutes I will check with your existing reservation.

USER: OK.

ASSISTANT: Thank you for your time, We have searched for data base but did not found existing reservation on your name.

USER: Ok, not a big problem. Thank you for your response.

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