You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you today?

USER: I am Shirley Evans. I made a reservation earlier in the wrong date unknowingly so, I want to change my existing reservation. Can you please help with that?

ASSISTANT: Ok, Shirley Evans, we are gleeful to aid you. Please wait for a moment, I will check the status and revert you.

USER: Sure.

ASSISTANT: Thanks for your time, we are sorry to say that no reservation has found in our database based on your name.

USER: Ok, no issue. Thanks for your information.

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